API Key not loading

Hello,

I’m really excited to use this plug in however, I’m having trouble’s with my API key. I followed your instructions and got a correct API key from Google twice (first time same issue occurred, tried a different API key, to see if it would take and no luck). It won’t say incorrect API key or anything, it just won’t load it at all, even after selecting “Update Configuration”. Any ideas?

https://www.ads-software.com/plugins/google-font-manager/