Common register in all sites

(Sorry I’m French)
I created an account using the github authentification on dbdiagram.io, but when I went to community.dbdiagram.io, I was not logged in, and only google authentification was proposed. So I tried to login with the same address as my github account, but it wasn’t recognized, and I had to create another account to post a bug report…
Could you make the registration un common for both sides of the website please ?