Your reason is banned.
And the rules that apply here.
25. Ban evasion (using or creating accounts while one of your accounts is banned) is not allowed.[e]
Fourth: Permanent ban
Your first ban is your first warning. If you have to be banned for a fourth time it is permanent and you will no longer be allowed to participate on the forum under any accounts. Note: If you are banned on one account then you are not allowed to post under any accounts you own for the duration of your ban. The only exception to this rule is Meta where you can discuss the circumstances of your ban if you wish to do so but anywhere outside of that sub will be considered ban evasion and will get your ban doubled, but it is generally best to just patiently wait out your ban and improve your posts on return and hopefully no further bans will be needed.