We can't control whether a third-party platform bans or restricts a number — those decisions are made by that platform. If it happened soon after you got the number, contact support; depending on the circumstances we can offer a replacement attempt or a refund.
Note that once a particular service has rejected several numbers for an account, further attempts on that same service often fail too, so we'll always be honest about your chances. Your device might be blacklisted by that specific platform, so we advice you to use new device while creating an account.