Cannot receive notifications on Garmin Vivoactive 6 from Iphone 12Pro

Hello!

I cannot receive notifications on Garmin Vivoactive 6 from  Iphone 12Pro. More precisely from time to time. I receive Notifications only after Restart of Phone and within 1-2 minutes. After Silence. Checked with AI all settings on Phone and Watch - no result..

Paired / Unpaired
deleted Garmin Connect and after installed

No Result.

Please help