I would like to ask about the membership plugin

Currently, I'm configuring the membership plugin in the test domain. I have setup the access levels, subscription plans and the payment gateways... my problem is.. when I tried to run a test and register or subscribe for the plan.. putting the information in the form.. and close it and didn't click pay for the subscription.. and refresh the page.. the account I subscribed was logged in as a user.. Is there any way that the user who signed up must pay so they can use there login infos? I mean it doesn't make sense if they would be able to login even if they didnt pay for the subscription. I really appreciate any help with this.