custom oauth signup & login

Hi guys, I tried to find an answer in discord but there seems to be nobody who ran into that - I cant integrate my "custom" oauth (hubspot oauth) - because they dont have a "User Info Endpoint" on their side. I "could" implement the oauth in my custom function, but since the server-side sdk cant create sessions for users, this is pretty useless...

Another way I tried to solve the problem, is to provide a custom user-info-endpoint with a function in appwrite, and also configure it in my openID Connect auth configuration as user info endpoint, but this ends up in routing issues on appwrite side (Could not resolve host: openruntimes-proxy with status code 0\nError Code: 0)

Does anybody has an Idea for integrating hubspot oauth? The problem is, that they just dont provide the endpoint and therefore appwrite cant use the "id" for the accessToken for creating the session.

I'm really running out of ideas... Hopefully somebody has an idea.