My initial thought is there may be a mismatch between the fields as expressed in the feature service and the survey configuration - could you share both the Feature Service's JSON information (Feature Service and Layer/Table) and the XLS file?
Thanks for your prompt reply. I've attached the following files:
- layer.json - the point feature class used to populate guid of related 'AuditPackTest' table
- table.json - for the related table 'AuditPackTest'
- subtable.json - for the table 'AuditPackSubtest' related to 'AuditPackTest'
- AuditPackTest.xlsx - XLSX file for the AuditPackTest Survey123 survey.
While I was getting those files together for you, I noticed the surveys seem to appear normal now....
So.... it may work now, though I haven't had the time to test it. I haven't changed any of the surveys, so I'm not quite sure what happened.