My hosting is on a shared-server. Some services which are hosted by Cloudflare can’t be used at the moment like check licence of Yoast SEO (my.yoast.com), licence of Elementor Pro cannot be validated anymore (my.elementor.com)
When I do a curl -i my.elementor.com, I receive a text saying there is a captcha to resolve.
I tested it on another server by the same company and it works.
I supposed that the IP address of my hosting is flagged by Cloudflare.
Cloudflare will not normally block requests, but website administrators will, using one or more of several tools made available by Cloudflare.
You’d need to contact the websites where your requests are being blocked or challenged (captcha), as only they will be able to investigate the issue.
They may be challenging a whole ASN, a range of IPs, certain user agents, etc. etc. If you provide them with details like the exact path requested and the time the challenge happened, they may check their Cloudflare Firewall Events log to understand what rule triggered that action.
You’d need to check with these service providers, and if they claim they have not set any protections that would cause the actions by Cloudflare, they would need to contact Cloudflare support to investigate further.