"No Active Device Used for Your Location" message on iPhone

iPhone 12- with latest update- when I try to send my location in iMessage it says “no active device”. When my friend looks on their find friends app it’s says for my device “no location found”. I’ve checked the network settings and did a reset. I’ve turned the phone on airplane mode for 60 seconds then back on. I’ve tried turning off iMessage and find me apps- then turn back on. I’ve toggeled every button you can imagine to ensure all locations are turned on in the all the settings (iCloud, privacy, etc). Something continues to block it.. I know it’s not phone service because the phone is right next to mine and (same service)- plus attached to Wi-Fi. Also, I can see other people’s locations and Vice versa. What is the fix for this, please.

[Re-Titled by Moderator]