What is different than the last times you've appealed saying the same thing? Your ban history includes a long line of not just offenses, but offenses that have targeted other players. Scamming, theft, griefing, not to mention the language issues. This apology and promise sounds just as promising as the last appeals. I don't think this is enough.
You don't necessarily need an unban to show everyone that you are indeed more mature. You can do that right now with joining in with the community and participating in a mature manner on the forums for a few months. This would show us that you have indeed improved, because I personally believe that you need to show you've changed first rather than us unban you and hope that is actually the case.
You do know your alt got banned today because of your ban evading? that's what probably lead to you not being able to get into your forums account. You may be banned.