I would appreciate if someone could point me to the right direction in understanding how to fix this.

After enabling cloudflare sometimes user ips appear as a strong like this 2601:19c:417f:84e0:c038:76f6:3d14:2e93

I enabled trust ips from proxies in admincp, is there a setting in cloudflare that effects this?

 

Nothing to fix. It’s just a newer/longer kind of IP address. 

https://en.wikipedia.org/wiki/IPv6_address

Thank you very much. I did not realize that.