So mark, ik that u have gotten some problems with ur Mineplex signature, and its kinda advertising to use it. to change it, you can:
1. Use a Signature just for the EW forums at "Site signature" If you want to use something else just when ur on here.
2. Click "Do not show signatures from users on this website" But that prevents you from having another 1 on here
Go to activity wall (house in down-right corner) -> Accounts settings -> Forum signatures