Minecraft Forums

I have been playing minecraft premium for a long time, mainly multiplayer, after I gt it from a friend. My old IGN was "grogan" and new one is "midleez"

Recently my friend must've changed the IGN to midleez, and since that whenever I try to logon any server, I get the error "Not authenticated with minecraft.net"

I've posted a thread about it on a server forums and I've tried whatever solutions they told me, none of which worked, I looked for solutions on YT, but to no avail.

I contacted mojang support, but they couldn't help.

Can anybody help me find a solution to this?

Otherwise.. R.I.P Good days of MC Multiplayer ;-;