Server11 is experiencing lag related issues during peak usage such as FP/Coli rewards time and GW tickets. If you have issues with crashes it's usually the same regardless of server.
Accounts can be transferred between devices. There was no need to start over. Did someone advise you to start over??
The company that currently owns/operates the game is not the same as the one that created it. Apparently, the ones that created it were wizards at producing horrible code that no one since can figure out even how it works as much as it does.
As a side note: No one on these forums can provide legal council.