Enduro 3 (software 10.23) crashes to blue triangle when pairing to phone on initial setup


Brand new, straight out of the box, going through set-up process and all going well until pairing watch with phone. Watch displays ‘finish setup in App’ message. When I hit finish on phone, watch immediately goes to blue triangle alternating with the enduro map profile, and connect says can’t find Bluetooth and to check connection. Have tried :
Turning phone off/on
Removing watch from bluetooth settings in phone
‘Forgetting’ device from Garmin connect
I’m wondering if there is some issue with this version software (10.23*)
Has anyone else had similar ?