It wont let me sign into a mojang account on minecraft.net, when I click login it wont go to another page. Microsoft account works though. On the launcher if I try to sign in on a mojang account it will always say the email/password is wrong, and I've reset it multiple times. So I bought it for microsoft and it allows me to sign in.

With the new minecraft account, when I try to connect to a multiplayer server it always fails, and when I try to connect to a realm it will stay on the loading screen forever. I was able to get in on another computer, just not my own.  I've re-downloaded it, got the newer versions of Java, I'm out of ideas.. Other games, such as PUBG works ...