Since January 1st I'm technically unable to complete any reservation online, as changing the country of the credit card address will result in a website error. It doesn't matter to which country you're trying to change it, as long as you access aa.com, the default setting "United States" cannot be touched at all.

This has worked previously. Upon contacting AA, they have advised me to use the local website of the country the CC has been issued - which does not exist (Singapore).

Currently the only way to purchase a ticket is to call reservations hotline, which is quite annoying. Another way is either to use the German AA website, or the Japanese AA website, as both use Amadeus booking system, which apparently has no issue with changing that option. However - currency conversion fees apply on my credit card every single time I do that.

AA is pretty much aware of this issue (and the fact that it has worked for years before that changed), but apparently cannot roll back or fix the issue (or won't?).

Most of the time I have to argue about the reservations fee, because the agents are not aware of this issue and always refer that I could complete the booking online - which I can't.

I've tried to get in touch with AA two times now, but have only received a standard answer and 5000 RDM - that's it. I know I'm probably the minority here, but if anyone has the same problem or any suggestion I'd appreciate that.