If you are using a Survey Solutions version 21.01 or later and have not upgraded to 21.09.4 please do so at the soonest.
An important bug has been reported by the users, which may lead to data being stored incorrectly, resulting in wrong answers being recorded under some circumstances (when the same questionnaire was imported to 2 or more workspaces, while being modified in the Designer tool online). The problem may be present and affecting data on the server even if no visual symptoms are observable. The problem has been fixed in the 21.09.4 update.
We also recommend to update the tablets to the most recent release of the Interviewer App to rectify application stability fixing the reported crashes while working with the map dashboard.