Jellyfin unable to connect to my server

https://preview.redd.it/2p2e3oh8nnmg1.png?width=1446&format=png&auto=webp&s=6840b82f67be943783c7bc6e1f279c5f65c10667

I have set up Jellyfin before and it worked perfectly, I then tried to get it running remotely with Tailscale, but for some reason it eventually resulted in me being unable to connect to Jellyfin, no matter the device so I removed the Tailscale connection, but the issue is stil present and even after reinstalling Jellyfin on my server, it's still unable to connect to my server (already made sure that my firewall and such wouldn't block it). Retyping my IP/the server IP address does lead to the log in screen, but it doesn't take my password and username