Ok so I thought I'd support the developer, missed the fine print that if I change from my original app sumo plan and upgrade, well, unless I pay yearly, there is no custom domain. And just like that my page is a 404 error for the important meeting emails I've sent out.

Now I have meetings people are trying to get to from my custom domain name which I had for a couple of years and by paying more money, to upgrade, removed that very feature I purchased.

So yeah, I'm going to use the AI tool I found and build my own and ditch this one so I can have my custom domain back in it.

I've subscribed to pro for a month now to keep my sub domain working because being able to connect my calendar with clients is important.
What a headache!!!