Cannot login to NAB Internet Banking via Firefox . . .but I can via MS Edge

I regularly login, via Firefox, to access NAB (National Australia Bank) accounts, through their Internet Banking selection. Over the last week/10 days this login has not worked - I get a (NAB bank) message saying "Something went wrong / try again later". Trying again later does not work. (pic.1) I rang the bank and spent some time trying to sort out the issue. Suggestion to get a new browser page via [Ctl][Shift][P] helped part way. I did get SOME of the new "logged-in page" showing, but not all the account details - blank grey lines were fading in & out like it was waiting to load information. (pic.2) The bank suggested trying another browser, so I tried using MS Edge and was Successful. The bank has recently updated the "look" of the screen (home page) that appears once logged in. Could there be an issue between Firefox and these new pages ? I would prefer to be able to keep using Firefox and not Edge. Thankyou