Amex cards are not syncing.

My Amex accounts haven’t been syncing for more than a week now. I tried disconnecting and reconnecting them several times. The accounts show up fine with the balances but the transactions don’t register. Nothing seems to work. Customer service hasn’t really responded so far.

It sounds like this happens sometimes, but I haven’t seen a good explanation as to how to fix this. Any ideas?

Seems to be a general issue with open banking, experiencing the same in other apps.