The issue reported above by @ashwinikalantri is confirmed: Interviewers logging into the Interviewer App of v21.05 may find themselves with an empty dashboard not showing previously received assignments and collected interviews. The data is safe and the interviewer needs to refresh the list of the workspaces, during which a workspace will be selected. The interviewer should not attempt to uninstall and re-install the Interviewer App, or it will cause the irreversible loss of data (as for any Android App, the data is destroyed during the App uninstall).
During the investigation of the above reported issue log files were inspected and found to contain a version marker for v5.22.20, which is a rather old version of the software, and was not matching the version actually used by the interviewer. Detailed review indicated that some versions of Survey Solutions marked the log files with this older version number, despite showing the correct build and version number in the App settings menu. This has been coming from a combination of our code and the process of release build and both will be immediately adjusted to eliminate this problem. This doesn’t affect the functionality of the program, as the incorrect version was only written to the logs, and was not involved in the process of determining whether the update is necessary or the App is capable of displaying a certain questionnaire.
Many thanks for reporting the issue (1) above and supplying the logs with which (2) was detected.