By default, accounts created in Jelastic are considered to be trial accounts. Those accounts, which were created before commercial release, also become trial.
Jelastic imposes various limits on trial users. Once you change your account to billing account, the limits are reduced and the account becomes a paid one.
According to the type of your account you have a particular set of rights and quotas. If you have a trial account and need more possibilities, you can convert your account to billing one without waiting till the end of trial period.