I don't have a P10 lite, but my dad has, and I've spent days googling trying to get it to pair and sync properly (not with a Vivomove hr though).
There seem to be a lot of different watches that have connectivity issues with the P10 lite. Not just in Garmin-land but Fitbit, Withings/Nokia as well (probably other brands too). The issues seems to at least partially be caused by the bluetooth stuff on the phone and partially due to Garmin Connect/Android.