Solid red Internet light

GrayG70

ZYXEL EX3301-T0

Hello, has anyone else had any issues with the EX3301-t0 red internet light coming on and staying that way?.

Signed up with Voneus months ago, everything seemed fine at first, then one day the internet light turned red, it remained that way for 2 days solid before returning to green on its own, Friday gone it went red again except this time its stayed red.

Ive checked cat 5 cable, fine, box on wall has 3 green lights no problem there, rebooted router etc etc etc, contacted Voneus and all fine there, seems everything works as it should up to the point where it reaches the router.

I cannot for the life of me figure out what can be causing it, anyone any ideas please?