I recently received a real id friend request from a gold spam site for D4. Not sure how this could happen. In any case trying to decline it on IOS and report the spammer failed in a loop. No error was generated at the report submit, when it finished the request remained. Closing or restarting the app did not help. I cleared it on my computer (desktop version).
Although there are SIMILAR issues they are old and have errors and show as resolved but you have NOT closed the thread.
Battle Net App version 21.2 (at bottom of load screen, not sure how to find the version in the app)
IOS Version 16.5.1 (latest as of the post date)