Minecraft Logging In

My username: shiftykeyz
Server: Logging in in general
Description: I don't know if this is a server problem or my laptop, but I log into other servers just fine. Whenever I try to log it, it will say something like "Not compatible with Minecraft.net" (photo will be linked). I have tried logging in on all versions compatible with the server (1.8, 1.9 and 1.10) but none of them work.

I do not know if this has something to do with the lag issue, but it would be okay if this could be fixed ASAP. c;

Photo:

Spoiler: Photo

http://imgur.com/0Z6XNVy

 

This happens when you change your Minecraft username.

To fix this,

1. Open the Minecraft launcher
2. Go to the bottom right of the launcher
3. Click "Switch User"
4. Re-enter your email address and password.

 

That means you are not logged in.
As @TheFirstChosen said, you should try relogging-in.