Hello,
I can't do anything about it but according to me, Pikanetwork is a cracked server so if you know you're password you can use tlauncher (search "tlauncher" on google) to use you're account again!
If you're a client user like me, Search LunarClient or LabyMod Or any type of client!
If you don't know the link of tlauncher let me give you!
Tlauncher:
https://tlauncher.org/en/
LunarClient download video: Search on youtube "How to download LunarClient In Tlauncher" (Instead of "LunarClient" you can use any client!
Hope this helped you!
Bye!