I created a survey yesterday in Connect and published it. It uses an existing feature service to collect data into. I can open it on the app on my phone, but on the web I get this error:
"This survey cannot be accessed in the web app. Please contact the survey owner to republish the survey with 'Create web form' enabled. Error: Missing .webform file."
I am 100% positive that it is being published with a web form (I tried with and without), so I can't figure out what the actual issue is.
Check your organization's Contents and try to find the form item. I've had issues with this sort of thing when the form item was moved to a different folder in my portal.
Did you find a solution? I am having this issue today. It only applies to surveys that point to 2 of the 4 layers I have in a feature layer.