Possible to upgrade?

Is it possible to upgrade my forum from the basic to the forum that requires a certain amount o posts to maintain, AFTER i sign up and set up the accounts?

You cant upgrade your forum. Don't worry about amount of posts. Everyone is the same.

when i signed up it offered me a premium option.
thats what im talking about.

Forumotion doesn't do premium option.

Are you sure this is forumotion?

positive.
do they describe the features of their pages anywhere.
i wanna review some things such as bandwidth

Here are the limits to forumotion.
https://help.forumotion.com/frequently-asked-questions-f5/some-limits-of-forumotion-forum-t1709.htm#9447

All the features are listed in here https://help.forumotion.com/updates-and-new-features-f1/

TY.

Perhaps you're thinking about freewebs?