Visible wireless in yeacomm router not working

I have a yeacomm router I’ve used for over a yr with a visible wireless simcard has been my wireless internet since but now there’s no wifi working
Can anyone help

What is yeacomm router?

It’s a router the kind of router is a yeacomm. I put a SIM card in it for internet

How is a Yeacomm router related to this GL.iNet forum?

I do not work for and I am not directly associated with GL.iNet