Hi @Richard-K
I am facing the same problem as Leo,
I have been going throught all the steps you recommended but it still doesnt solve the problem!
Funny enough, the Gridder was not even showing in the projects until I actually installed the Yoast SEO plugin, so the opposite of what was recommended solved that problem, but still in category the gridder is not showing!
here is a screen shot of my settings of the website status
Best,
Dominik