youssef93 Wrote:and will it a certain amount be deducted automatically every thirty days from the users money? What if he doesn't have enough money to renew the subscription? Will he be automatically moved to his previous usergroup or what will happen?

No, it won't automatically be deducted.  "Expiry" means just that, (s)he'll be automatically be reverted to his/her old usergroup (then (s)he can pay again to enter).