FP4 Can't send and receive mms to/from apple devices

I have had FP4 nearly two years now, and this issue has been coming and going. I can send and receive mms/pictures, group chat etc. to and from android devices, but sending to and receiving from iPhones doesn’t work.

I can see that others have had similar issues, and I believe I have tried all of the suggested solutions; changing the APN with several different settings from telenor, 3, greentel. I have changed the SIM-card. I have used SIM in another phone to make sure it’s working… I even changed provider…nothing seems to work.

Does someone in this unbelievably clever network have any suggestions on what to do?

Thanks!