Couldn't retrieve http://www.wppersian.com, and the only explanation I have is:
HTTP/1.1 400 Bad Request
Connection: close
Date: Sat, 28 Jan 2023 16:30:20 GMT
Server: openresty/1.13.6.1
Content-Type: text/plan
Client-Date: Sat, 28 Jan 2023 16:30:20 GMT
Client-Peer: 198.58.118.167:80
Client-Response-Num: 1
Client-Transfer-Encoding: chunked
Invalid Request