Why do I keep needing to fill out wifi settings?

Garmin 6S Pro Sapphire. 

Connecting to wifi is still an issue. 8.10. No improvements. 

I have tested sync with app, connection good. 

On garmin express, I've added the wifi connection - MANY times. 

Basically every time I re-sync via cable with Garmin Express, it asks me to setup wifi. 

It's like it forgets it EACH time. So annoying.