Garmin 6 Pro Bluetooth issue... Not connecting to Garmin Connect App

Hi Forum, 

Hope you can help me as I believe I tried all... My fenix 6 pro stop connecting to my phone and since then I tried several options:

Started with the typical restart both phone and watch, forget the device on the phone and re pair, remove the watch from the app, restore to factory settings the watch, recently installed a beta vertsion so now Im on 27.77 as I thought that might be help... Nothing all the time the same issue:

When paring the watch immediately detect it but when i go next to get pin to continue, it get stuck there and after some time fail and give the option to retry but never connnect. I went to bluetooth on my iphone while this process is going and I see the watch connect for a fraction of a second to the phone and then dissapear and try again every time the same undtil i believe it timeoff. 

Any clue? The phone works perfect I was super happy to with it for now 5 years but... without the connection get it sync to my garmin connect is not really good.

Update: Forgot to mention i also tried to pair the watch to another phone and didn't work either so isolated the issue on the watch.