Unknown server host?

I was able to activate and submit a form, and then I chose a form to save, and it just throws an error- it does not save. It shows signs that it’s “working” that request but it just keeps throwing the error below- which I don’t understand- any ideas, suggestions?

DataTables warning: table id=nimble_table_data – An error occurred while connecting to the database. The error reported by the server was: SQLSTATE[HY000] [2005] Unknown MySQL server host ‘sdso3687619680.db.3687619.hostedresource.com:3311’ (0)