I have a Vivo move luxe watch for 2 years and this white triangle has come on the face of my watch and it will not charge. I have tried everything mentioned even got a new charger but it’s still not working.
Has not happened with my Style, but it happened once with the Vivomore HR I had before. I just let the battery discharge completely, to the point when not just the display turned off but even the hands did not move anymore, then I recharged it and it kept working for years afterwards as it never had happened.
I speculate that the microprocessor in the watch got stuck in a weird state or loop and it had to be hard reset, removing power completely. With the Vivomove series not having any physical buttons, a hard reset is impossible otherwise, I am afraid.