We have a S123 that was closed a few weeks ago as we have since deployed the production version. I checked when it was closed and the survey would not allow responses through the webform or app (as expected). We had a record come through this morning, however, from the test survey. I checked and all of the settings are still set to close the survey – including requiring an update to the latest survey and using the latest version of S123 (other troubleshooting tips / suggestions). I cannot submit a record through the webform but I can now submit records through the application. I found the thread linked below but there was no solution for it – just guidance to email this in (done, but I wanted to see if anyone else had found a solution).
https://community.esri.com/t5/arcgis-survey123-questions/why-won-t-my-survey123-close-when-i-set-it-to/m-p/806475


The survey was authored using 3.16 but requires an update to the latest survey and is set to use the latest version of 3.17.