My website is also stop working from Monday.

Hello.

I checked the IP address with the command below, but it does not match the EC2 IP address.
What does this domain have to do with EC2?

dig buytestseries.com

; <<>> DiG 9.16.1-Ubuntu <<>> buytestseries.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 29131
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;buytestseries.com.             IN      A

;; ANSWER SECTION:
buytestseries.com.      3600    IN      A       23.227.38.32

;; Query time: 0 msec
;; SERVER: 127.0.2.2#53(127.0.2.2)
;; WHEN: Fri Mar 01 18:56:57 JST 2024
;; MSG SIZE  rcvd: 62

I see no issue here. The public IP probably rotated so that's not valid.

host buytestseries.com
buytestseries.com has address 23.227.38.32

host 23.227.38.32
32.38.227.23.in-addr.arpa domain name pointer myshopify.com.

curl -ILs buytestseries.com | grep 'HTTP\|Location'
HTTP/1.1 301 Moved Permanently
Location: https://buytestseries.in/
HTTP/2 200 

Can you please check now.

I have hosted some more url as well Like

webapi.buytestseries.com selleradmin.buytestseries.com But no website is responding. It would be great you can help to resolve.