I don't know whether you are trying to go in through the site's main page or access a page your bookmarked before, but you could try going through a search results page, like: https://www.google.com/search?q=bank+of+america Are you able to get into the main page. Are you able to submit the login form? Note: users have reported a problem with some sites if you are using the MetaMask extension. Apparently, you need to disable one of its settings: https://old.reddit.com/r/firefox/comments/1jevp4r/psa_disable_the_metamask_addon_if_you_have_it_and/

The MetaMask extension authors have a version 12.12.1 update as you can see at https://addons.mozilla.org/firefox/addon/ether-metamask/versions/