Hi there!
Jo here from the Moz support team, thanks for reaching out 
In short, the 0% search visibility indicates that you're not currently ranking in the top 5 pages for the keywords you've add to your Campaign.
Even if you've optimized your site there may still be site's out there with higher authority and content that serves the people searching for those keywords. I've written a blog post that addresses exactly this here https://moz.com/blog/optimized-my-site-but-still-not-ranking-next-level
You can read more about search visibility in our guide here https://moz.com/help/guides/moz-pro-overview/rankings/search-visibility
I would also recommend using Keyword Explorer to find more keyword opportunities. https://moz.com/help/guides/keyword-explorer
You can also look at Google Search Console to find keywords you're already ranking for and upload those to Keyword Explorer to see the level of Difficulty you can start to target.
It sounds like you've migrated your domain recently. I would note that Moz Pro tools like Rankings and Page Optimization can indeed analyze custom tlds like Divergence.Academy, however we haven't added these to our backlink index in the past. This may be why you were seeing DA1 and PA 1. We're working on fixing this and should have data on custom tlds in the future.
Generally speaking, changing your domain is quite a bit step and not necessarily something that will fix your site not ranking for your desired keywords. Search engines take time to register the change and understand your new domain's authority.
When you do migrate it's important to check you have set up your redirects correctly, checking your old domain in a third party tool it looks like this could do with a clean up https://screencast.com/t/du4utNNKxs
I've got a guide to redirection here https://moz.com/learn/seo/redirection
SEO isn't something that happens overnight, so I would advise pushing on with your SEO. Look into creating content that helps your visitors and encourages people to link to your site to help build up your authority.
I hope this helps.
Let me know how you get on 
Jo