It is possible that you were mistakenly banned as soon as you joined, or that the moderators of the website you joined had a policy of banning new members until they had proven themselves to be trustworthy. If this is the case, then you should contact the moderators of the website and explain the situation to them. They may be willing to lift the ban, or at least provide you with more information about why you were banned in the first place. Alternatively, if you were banned for a legitimate reason, then you should take the time to understand why and work towards changing your behavior so that you can be welcomed back in the future.
