Hello,
It is unlikely that your issue is related to this thread. The bug mentioned here was related to 3.13/3.14 and has been resolved (currently, we are on 3.19.104 - and to my knowledge, there have not been any recent updates).
It may be better if you start a new thread.
The first things to check:
- Can you access any other surveys?
- Can you access this survey in Portal/is Portal turned on?
- Which account published the survey from Connect, and which account are you access that same survey with in the S123 Site? If they are different accounts, this may be a permissions issue.
- Does this particular survey have any groups with the table-list appearance and is the first thing in that table-list group anything other than a select_one or select_multiple? (This is a bug which I cant recall if they fixed yet. The first thing in a table-list group needs to be a select_one or select_multiple and the bug goes away).
- EDIT: here is something from the KB on the issue that may be relevant: "Item does not exist or is inaccessible" when submitting or viewing an ArcGIS Survey123 survey form
