Attempts to publish surveys from ArcGIS Survey123 Connect fail, and return the following error message:
Error: Request error 403 Request not made over ssl
This error occurs when an HTTP URL is used in the submission URL of the XLS form in the survey. ArcGIS Online enforces the HTTPS Only default setting and no longer supports HTTP. Refer to Important Updates for ArcGIS and HTTPS Only Enforcement for more information.
Note: If the feature service is not available in HTTPS, the address cannot be used in the submission URL of the XLS form..
On the Settings tab of the XLS form of the survey, change the submission URL from HTTP to HTTPS in the submission_url column.
The following image demonstrates the survey is published successfully.