Despite no additional updates I am aware of - unless firefox installed something in the background - I see some github text extension window flashing several times - and can connect today.
*Still looking for explanation as to what issue was for others & if it recurs in future.
Once it connects and provides the list of 5 accounts, I do not see the account I am looking for. By clicking next it then shows accounts 6 - 10, and continues advancing to display the next 5 accounts however it does not show the one I’m looking for and stops around accounts 40-45 of which I haven’t created that many. Is there a way to search or find the account I’m looking for?