amp and cloudflare cache

Cloudflare does Not support Mobile redirection.
Ref screenshot: https://prnt.sc/112ux9h

The reason why Cloudflare does not support Mobile redirection in AMP:
Cloudflare install on the server-side because of that reason it works on the high property and it does not allow mobile redirection and it will serve the desktop version only.

So please keep in mind that if you want mobile redirection then you need to disable Cloudflare and you cannot have both Cloudflare caching and mobile redirection at a time.

Ref tutorial: https://ampforwp.com/tutorials/article/mobile-redirection-not-working-even-after-enabling-the-option-why/