Your brother's account banned for plagiarism and his ETH wallet address you used has been caught and I doubt that why you are using his wallet address instead of creating your own? Cause as I saw your account you are a full member and eligible to became a senior member when you reach the activity needed which is in that ranks you should already know the rules and regulations here in forum. In that case when you caught using that address for sure they are suspecting that you and that banned user are one. And like other said above there's a doubt if the mods will trust your words cause if they are for sure many banned user will create a thread like this and make reason like this.