I tried to log back on to the FB app and also didn’t receive a text message. But I looked on the Android Firefox version and (apparently since I didn’t try to access it from there during The Crisis of 2024) I was still logged in and there was a message telling me that an unknown device was attempting to log in, is it me. I confirmed that it was and then the FB app was allowed to log in without the SMS.
(I have to use the app now because this browser problem was never resolved.)