What type of suspension is it?
If it is a temporary suspension, such as a suspension from daily hits limits or CPU limits for example, you will have to wait approximately 24 hours for the suspension to lift.
If this is a permanent suspension, you will have to open a support ticket in the client area, because we will not be able to help you.
If you are the one who suspended your account, or your account was suspended due to inactivity, you will see a gray banner, and a button that says reactivate account. Simply reactivate the account to continue.
Check your Hosting account in the client area for more information, you will see it in a big red banner.
For more information, refer to this article: