Office 365 E3 subscription shows expired Nov 2018

Hello

my Office 365 E3 subscription now shows an error message.

"We've run into a problem with your Office 365 subscription and we need your help to fix it"

When I check my subscription in the Office Admin centre it shows that my license expired 03 November 2018. But it's only June.

Any ideas how to get this fixed? if I click Reactivate I am prompted to pay again.

Thank you.

Alasdair Barclay