Members Can Upgrade For Free!?? What's going on?

Hi guys,
I have noticed that when you go to the [renewform] on the page..

The upgrade button upgrades the account but it doesn't send them to paypal (paypal solo)

So, they get the upgrade absolutely free! as it upgrades them to the next level immediately!

I think you guys are great and your work is awesome,

but there has been so many glitches with this membership plugin..

Is there anything you can do to tidy these up, like someone said before, we'd rather stay using WPMDEV products as they are awesome.

Thank you
Steve