Crashed website

The IP you have updated >> and it is correct but as you can see that it is not propagating to the IP you have updated you can see that in this link it is showing other 2 IP address in this link >> DNS Checker - DNS Check Propagation Tool

Yes, that is the expected behaviour, those are Cloudflare IP, if you look at the value of the A DNS record, you’ll see the origin IP.

Click on ERR_TOO_MANY_REDIRECTS and remove the redirect at the origin