Hey rodrigo, I am having the same problem (Code: 1110)
Can you please explain what you did step by step to solve the issue?. I don’t have as many sites as you but this is the first time with this kind of problem as well…
I got it sussed at the end. My issue was the nameservers, but also there was a ‘www’ CNAME on my cpanel record that was pointing to Cloudflare and not my site. Once I deleted that and created a new one with the proper site address I tried adding the site to Cloudflare and everything went through, and now my site is showing online.
Just thought I’d share incase someone else with a similar issue finds this thread.