The add and delete icons can be disabled when viewing existing records from the inbox in the field app
by setting the bind::esri:parameters column to "query allowAdds=false." However the web app does not support editing existing records, so adjusting these parameters doesn't have any impact on repeats in the web app.
Repeat add/delete options when collecting new survey vs. viewing in inbox with allowAdds set to false:
The web app now allows for editing using mode=Edit in the URL, however this parameter still doesn't impact the repeat. Is there a different attribute for the web app or has this functionality not been included yet?
The bind::esri:parameters related to editing are currently only supported in the field app. We do have an open enhancement issue to add support for these parameters or an alternative method to configure the editing capabilities in the web app.
Thank you for the information, I hope this enhancement happens soon. Is there a way to add my support to this request to encourage it's development and be updated when it will come out?