Mobile Friendly Checker not working anymore

[ikkims]

It worked fine for a long time but in the last  2 weeks it worked some of the time and now it doesn't work at all.

I have

Windows 10 Home

Version 1709

OS Build 16299.371

I use FireFox

Thanks for any help you can give me.

[professorlizzardo]

Same problem here.  Mobile checker is not working at all.

Using Win7 and Chrome

[tolu31209]

Whew! At least now I know I'm not crazy! Same problem, only once in a great while will it work. Using Windows 10 & Chrome. However, I tried with my iPad & Safari-it wouldn't work either. Very disappointing.