Paid Members Plugin
 

I want to install a Plugin for Members to Become Paid member for certain additional Features on Vbulletin Forum. which plugin would be best with easy to use interface, providing maximum features to Members?
Like members should be able to post threads in marketplace/BST section if they are premium member.

Can't you just do this using the regular Subscription feature in vbulletin?

I want members to be able to post in BST section only if they are paid members and allow them to BUMP thread if they are renewing Premium/Paid Subscription.

make an additional usergroup with those permissions and a subscription that will add them to that additional usergroup.

There is a newer version of vBulletin available to download
Latest version available: 4.1.12 Patch Level 1. You are currently running vBulletin version 4.1.3.

Click here to download vBulletin 4.1.12 Patch Level 1 from the Members' Area

What's this?

it means that there is an upgrade available. you can download it from members.vbulletin.com

you would then upload the files (except ./install/install.php) and run the upgrade script (./install/upgrade.php)

Be sure that if you have any customizations to the files themselves beit for a mod or something else that you remember to restore those edits after the upgrade.

It is clear to me what that is, do you have trouble reading english

Back to paid subscriptions. I enabled the payment system. Now how to restrict only paid members to be able to post in BST section?

You would set up your subscription to add an additional usergroup to the users. Then go to Forum Permissions and find the forum and click Deny All and then edit that new usergroup and grant them permissions to see the forum.