Fail in Pairing

Enduro 3 just don't pair. I was using Garmin Connect normally with my Forerunner 235. I use it on an Iphone 11 Pro. I restarted the Garmin Connect App. I reboot the phone and the watch. I uninstalled the Garmin Connect App and reboot the phone and then reinstalled the Connect App and reboot the phone again.

The iphone finds the watch it but "Fails in pairint - Not possible to pair your garmin device". When I take the picture of the QR Code at Enduro 3 screen, the Connect opens and asks: "Ready to conect your Enduro 3" and there's a button "Connect it". When I push the button the iPhone screens says "Coneccting your Enduro 3 - concluding the setup of your Enduro 3"... it doesn't show me the 6 digit pin on the watch... and then the iPhone screen says "Fail in pairing - It's not possible to pair your garmin device" (all these sentences are in Portuguese and I translate them to english).