When attempting to log into my bank, I get message "Trouble Loading Widget". Yesterday, I could log in though couldn't use all features with my bank.

I think I recently updated Firefox on my MacBook macOSSequoia 15.7.7. Around the same time, I downloaded the recent update for Sequoia. I don't recall which occurred first. Since then, I am unable to log into accounts & if I can, I can't use all the features. Today I can't get into my bank at all (yesterday I could use Bill Pay, though not Zelle, couldn't see recent transactions, either). I received a message about Trouble loading a widget. I don't even know what a widget is. I tried switching to Safari and there are many problems with that as my password manager, 1Password isn't enough for them. I have to choose from the squares whatever they are asking for & that is difficult bc it's too small to see everything. I feel as if my laptop has been rendered useless. Maybe I should call Apple Care or will they only work with Safari? I have been using Mozilla's Firefox for so many yrs I don't like to have to change everything. I've played around with privacy & security to make things less secure & that doesn't work, either. Thanks for any help.