Hi Robin,
Thanks for the form. Here we are having some issues with this form.
1. Missing lables with Other
>There is an existing internal backlog issue logged with this. I encourage you to submit this issue as a bug via Esri Support. Our Support team will assign an official bug number for your records. This number can be used to search for and subscribe to the bug on the Esri Support site. If the issue is reported by other customers it will be attached to the same bug report, which helps us assess the impact of the issue and prioritize it accordingly.
2. FlightTimeDuration calculation does not work on the web form.
>Again, there is an existing internal issue logged for this. Please also report this to Esri Support.
3. FlightTimeEnded spinner moves in 15 minute interval.
>On our Help documentation, we did document this but the actual time interval is 15 minute, instead of half-hour interval. We will update the online help to reflect the actual behavior for the next release.
https://doc.arcgis.com/en/survey123/browser/create-surveys/quickreferencecreatesurveys.htm#ESRI_SECT...
Thanks for reporting the issues, hope this helps.