Tunnels dont move past the first login page. or cant access the app

im using docker to run a local web app. and im using tunnels to reach it.
im using a network i created in docker to connect everthing.

but when i run the domain it dosent go past the first login page/ stuck at the first html page/ cant access any applications inside.

i tried using nginx for a middle man, didnt work. tried the stand alone router ip, didnt work.

this is the network status when i click on the login button that it gives

would anyone please help out.