Issue with installed Office 365 now not recognising my account

Hi I downloaded and installed office 365 for Mac in 29 March with no issues, and have been using it ever since.  Now today, I can log in to my account on line and see that my subscription is (obviously) active - I paid for a year.  However, on going to log into Outlook (or word or excel etc) it is now asking me to sign into activate my account?????  It won't recognise my password so now I can't use Office at all on my Mac.  when I go to go back or use a temporary get the second screen shot temporary service problems  (for 24 hours) , HELP!  thank you (BTW the password is correct for the account)