Firefox v110 on Galaxy A50 getting not supported messages

My devices are a Samsung Galaxy A50 running Android 11 and no non-standard extensions or settings. Firefox is 110.0.1. My normal Firefox has never been re-installed it has just been updated all along from a very early one. Tablet is an ACER B3-A50FHD running Android 12 with Firefox 110.0.1 I do not have the app installed and do not want to have to switch to a APP just to follow some forum or other. Firefox should just work.

Stuart