Generating cert - http-01 challenge failed

i am facing error on my website, i have added the dns & A records in hostinger, .com is validated & error on www.com : We could not generate a cert for www.qanry.com because the required http-01 challenge failed.

i have checked the DNS and they are fully propagated,: https://dnschecker.org/#A/qanry.com

The domain troubleshooting guide has more suggestions: