I quit a job over this. I don't remember exactly which service it was we were using (mixpanel maybe?) and we found out some users where blocking access to service servers (either at router level or something else). The solution? make a proxy api endpoint that would just re-route the calls to the service.
I beg and begged, saying 'look, these are users that specifically blocked 'service', lets respect that and get our data from the users that haven't' (this was before the Apple privacy changes a couple years ago). I was steamrolled because they knew better than users. I handed my notice the moment the ticket landed in the board.