Your OP is talking about the ban for user Hrome. That account was banned because it was linked to a previously banned account Dubrov12.

So if you plagiarized with the account Dubrov12, you need to try and appeal it. Though for this you need to show that you are a net positive to the forum in some way.

So whichever account you first got banned for Plagiarism with, is the account you need to make an appeal with. You can also ask which post actually got you banned in that thread and someone will find it. It doesn't look good that you went out and tried to circumvent the ban by creating a new account, but you can still try and appeal.