Temporarily Unavailable when submissions are being made

Hi, we are getting a temporarily unavailable message, when our users are hitting the submission form and thee spreadsheet is hitting them but they are blank in submissions, 

do you know how long this is going to be don for ?

Many Thanks 

Carla

We had a temporary server issue that affected EU users.  This should now be fully fixed and form should no longer be giving this error.  If they continue to do so, let us know and we will be happy to have another look.