Yes, there is an issue without a fix currently. It happened around WordPress 5.8 update. GoDaddy Managed WordPress are randomly affected. Some of my sites work fine and others are nonstop 52X errors.
It is not good. I was booted from Google Adsense. There is no chance of getting back Adsense, especiallywith their new violation policy that rolled out last month.
I spent 2 weeks troubleshooting and banging my head into the desk 14 hours a day. I knew better, but didn’t trust myself and paid the price.
Cloudflare is aware and will have a fix soon, I hope.
My recommendation, if you move your site over to Cloudflare DNS with default settings, and it gets 520 errors after waiting 48 hours for propagation, don’t beat yourself to death troubleshooting. Go back to GoDaddy lame CDN and DNS for a.little bit longer. Btw, it has taken that long to propagate in the past 2 weeks.
Don’t waste your time, energy, or precious SEO loss, just a wait on Cloudflare to fix, whatever GoDaddy broke.( Only thing that stands out to me, Securi implemented a new network with new IP ranges).