It looks like you have some kind of intermittent controller issue. I cannot locate anything on that Ruida power fault screen. If you can’t control the controller, it must have an issue.
The only thing I could suggest is use a volt meter to check the PWM inputs to the power supply. Doubt it is an issue if it’s working locally. Keeps coming back to a controller issue.
What’s your gut feeling? Seems there isn’t a lot of choices.
Good luck 