Can not log into cockpit remotely via Caddy Reverse Proxy, keeps saying incorrect l/p

Hey, not sure if it was something blocking on the OMV Server side or a misconfiguration on the caddy (on OPNSense) side but here are the deets.

If I am HOME and local, l/p works fine. If I am remote and connecting through [omv] WireGuard, works fine. But if I go via reverse proxy using caddy (on my home firewall OPNSense) it logs to the welcome screen of cockpit and I type the l/p and it keeps saying incorrect login and or password. I verified it IS correct cause I used copy/paste when I connect via WireGuard. It just seems the l/p is not transferring via reverse proxy.

Well I did not FIX it but bandaided it.

So on Caddy I am doing the double authentication. Caddy itself then of course cockpit. When I disable the caddy auth, it works fine. So now I need to figure out do I pester OPNSense /caddy plugin or do I look into cockpit itself not liking that double l/p