Heated rear window and mirrors

[Davest]

My heated rear window and doors mirrors don't heat up the light on the switch comes on when pressed but nothing happens it's a 2020 excite mk1

I have a 2020 mk1 ev Excite my heated rear window and doors mirrors don't heat up the switch lights up when pressed but nothing happens also the 12v power socket in the cabin doesn't work either

 

[Bricktop X PWR]

Even though the light comes on my first check would be the fuse.