Was this issue resolved in the end?
Yes, account overdraft because of an unexpected bill but it didn't show up in my bank statements on the day I tried to withdraw, only a day later (or more?).
I didn't connect the dots and the customer service just said I should try again at a different ATM. Then I mentioned I already tried multiple ATMs and then she talked with the other department and they noticed that the bill. That made sense and then I tried again and it worked.
So I guess I just couldn't withdraw while this bill was still getting processed and rejected, lol.