My hearing aids stopped pairing with my iPhone.

Same thing happened with me and my Rexton hearing aids. I can't seem to find a solution online (yet). Very frustrating. They won't pair with all 3 of my Apple devices. Might be time to contact Costco where I bought them. I need to bring them in for a cleaning anyway. But if you find a solution, please post!

Do you have these?

List of Made for iPhone hearing devices - Apple Support

Perhaps there are useful things to try here - from the iPhone User Guide.

Use hearing devices with iPhone - Apple Support