Disclaimer: author is NOT responsible for physical, logical, or consequential damages (perceived or actual) including but not limited to: computer reboot failure, missing missing, lost passwords and and/or form data, throwing computer across the room, punching the screen, and hitting it with a sledgehammer; that may arise from using the procedures described below. They are the steps I would follow on my own computers, but there is no guarantee they will work on your computers.
Here's five possible solutions -
PLAN A
Create a 'new user' in Windows! Use whatever username you choose. Then 'switch users' to the newly created user and logon to Amtrak. Alternatively, use an already extant user on your computer to log onto Amtrak using your AGR number/email plus password.
==>IF<==
the problem is related to files and/or information on your computer for you, then signing on to Amtrak as another Windows user will solve the problem as all history and tracking info is individually maintained by user.
PLAN A1
(I just thought of it after typing PLAN A which I did as the last thing creating this lengthy how-to list) Sign on to Amtrak from a computer other than your own. If that works (ie, toggle the 2FA switch), that narrows it down to YOUR computer, not an Amtrak site issue.
PLAN B
Similar to Plan A and A1, sign on to Amtrak using your cell phone and change it there, successfully log off (end task), then shut down (not sleep) and re-boot (not kick) your computer and see how that works. I'd give it a 50% chance of solving the problem.
PLAN C
Perhaps it's several data, screen, and cookie caches that's causing the problem. An unfortunate reality is that all browsers maintain caches of data and screens to speed up their response times. It's quite likely that information from the Amtrak site is kept in one of them that's causing the grief. It may be something as simple as 'cookies' causing the problem.
If you're afraid to adjust browser settings, then go to plan D.
I'm a Firefox user but I'll describe things as generically as possible. Somewhere in your browser, it should have a drop down window that offers various things such as bookmarks, downloads, passwords, etc. In particular, look for 'settings'. If no settings, then look for 'tools' or 'options' or something like that and it should offer some kind of 'settings' there. In Firefox, the settings screen has multiple sub-screens that I usually end up stepping through one at a time to find what I'm looking for.
On my computers, I've restricted the number of 'shortcuts' it remembers to 1. Doing so slows things down just a tad by having to get every 'new' site other than the most recent one 'from scratch' on the web. Doing so forces it to not use a 'saved' version of the site you previously visited. I'm guessing that something more than the URL is saved in the 'shortcuts', so maybe that's the problem as Amtrak site info is stored there.
Still in 'settings', the Firefox 'Cookies and privacy' sub-screen (left side index of sub-screens) has a 'cookies & site data' option with 'clear data', which I clicked - it will cause whatever site you're browsing to be temporarily disconnected. There's another option to 'delete site data and cookies when Firefox is closed' which I've checked as well. Hopefully, other browsers have similar options. One Catch-22...do NOT change settings you don't fully understand or else you may have to reinstall your browser. Then close your browser, and reboot the computer. (Note: I've made similar 'settings' adjustments in Thunderbird, the companion email app to Firefox)
If that fails to remedy the problem, keep reading.
PLAN D
Before embarking on PLAN C, PLEASE do the following: (I don't want anyone to 'hunt me down' in case something goes wrong following these directions)
In the WIndows 'search box' on the left side of the bottom toolbar, enter 'create' and click. It will come up with 'create a restore point'. Click that and CREATE a restore point. If things go wrong for you with PLAN D, come back to the same screen searching for 'create' or 'restore' and click 'Restore'.
Even though most of the cached browser data will be cleared automatically in PLAN C, there's STILL some data 'hanging around' in hidden files. If they were easily seen, users could cause enough 'damage' to apps to make them stop working or to Windows to require a full reinstallation. Some of them are so deeply hidden that techies like me spend a lot of time finding them, oftentimes 5 or more sub directories deep!
MOST of the caches used by Windows and the full gambit of browsers and email apps can be cleaned out by free downloadable software. The free versions of these 'speed up' programs will usually perform 70-80% of what needs to be done. To get the full capability, it's necessary to buy a one year subscription for a reasonable price.
My favorite program right now is CCleaner which I have paid for. (no, I am not a shill for them...only a satisfied customer). I used to use a competitive product but about 2 years ago then came up with a new version that essentially 'castrated' the Windows registry selective repair features I used monthly. So, out with the old and in with the new...CCleaner.
I should note that CCleaner has a significant number of file and folder delete capabilities in addition to strong registry options that could cause Windows problems if not judiciously used. For non-techies, I strongly recommend NOT using its registry features.
When it first comes up, choose the 'custom clean' option. That comes up with lists of folders for Microsoft Edge, Edge Chromium, Internet Explorer, Windows Explorer, System, and Advanced, all of which are built into Windows. UN-check Session, Set Aside Tabs, Saved Form Information, Saved Passwords, Network passwords, Desktop Shortcuts, Menu Order Cache, Tray Notifications Cache. Deleting passwords will require you to enter your password the first time you enter sites requiring them. As a 'security freak', I intentionally tell it to delete all passwords except for my email. I did that once and I had to re-signin to my email provider -and- tell Thunderbird to 'remember password' again.
Clicking the Applications tab brings up the non-Windows builtins including Firefox and Thunderbird plus Applications, Multimedia, Utilities, and Windows. I have everything is checked except the session, site preferences and saved passwords for email.
Now click 'Analyze' and wait for it to come up with its results. Review the list of folders that are about to be cleaned out and uncheck those with stuff you want saved. Then click 'Run Cleaner' and the folders 'checked' will be cleared out. For safety, I recommend you do NOT choose the 'registry', 'tools' and 'options' features.
Shut down CCleaner normally and reboot. Hopefully THAT will clear the 'Amtrak' site problem.
PLAN E:
There's STILL a number of well-buried browser and email folders as well as Windows and Adobe that CCleaner does NOT clean out! Among them is 'history' that Firefox keeps and 'startup cache' folders in Firefox and Thunderbird. There's also a couple of Edge files to clean out as well.
IF you're comfortable with viewing hidden folders and chasing down multiple levels, PM me, I'll give you a list of what to go after for Mozilla, Microsoft, and Adobe to clean out.