If you use cloudflare and have uploaded the validation file correctly, but the validation is still not working.
Changes are high that Cloudflare is blocking our service.
Please whitelist the following IP addresses:
Cloudflare can also block our user agent. Please also whitelist our user agent:
USER_AGENT = 'cache_warmer (+https://www.cache-warmer.com
If validation is still not working, please contact our support!