Why is that a FREE TRIAL account became ADMINISTRATOR ROLE which is supposed to be only a SUBSCRIBE

Hello,
I am currently using PRO SITES PLUGIN,
i already set everything under 4 categories such as:

1. Free trial
2. Standard
3. Prosperous
4. Platinum

Each categories or kind of subscriptions was already set up in the PRO SITES SETTINGS
...I tried to register under a FREE TRIAL account, supposed to be it has only limited access to such features or simply SUBSCRIBER ROLE only.

But after the FREE TRIAL REGISTRATION it became ADMINISTRATOR so the TRIAL ACCOUNT has full access to all the features because after their TRIAL ACCOUNT REGISTRATIONS it became automatic ADMINISTRATOR which is not supposed to happen because the registration account is only for TRIAL ACCOUNT.

Please advise how to fix this kind of situation. Hope you understand the full scenario.

Thanks a lot.