Board Excel Add-in not responding after Connecting

After logging on to the Board Excel Add-in, all of the buttons on the Ribbon are not responding other than 'Disconnect' & 'Add-In settings'.

I can open another spreadsheet with a connection concurrently and it works correctly.

The spreadsheet was working and has suddenly stopped responding (for the Board connection).

Has anybody else encountered this issue and have a solution for resolving it?

thanks

Answers