Site Kit won’t work with Media.net

I tried to log into my Media.net plugin. (Ads that can run side by side with Goole Adsense). It wouldn’t work. I disabled Site Kit (the only plug-in I’ve installed in the last couple of months. Once I disabled Site Kit, The Media.net plugin worked fine. When I re-enabled Site Kit, the Media.net didn’t work again. I get a blank page on the “settings” page of Media.net, when I usually get a log-in page. Can’t log into Media.net at all while Site Kit is enabled. Is there any way to fix this? It’s not — so far as I know — a known bug. Or described in the Site Kit “Limitations” section.

The page I need help with: [log in to see the link]