HAproxy and nextcloud and other

I found similar issues on this forum but none of them is using solution I found on other platform, but I want to know why I need to do this for so many of my services.

Here is screenshot of my setting and what I rounded, if I set to HTTP for health check, and if I don’t add those like in advance setting section, I get error which I uploaded as well on second pic.

I am getting same issue with proxmox server, heimdall docker container and jellyfin media server.

Question is, is it safe and anything else, need to be changed?

I am unclear what the issue is perhaps try the Netgate forums. There is a similar discussion here hAproxy hands over client IP to apache2 logs [SOLVED] | Netgate Forum