Membership Pro 2 - Pending billing status?

I have Membership 2 Pro plugin installed on my site (which isn't live online yet).

Someone who was checking out and testing the site for me signed up with a paid membership, but for some reason something like 12 hours later the membership is still showing as 'pending' (see screenshot). How long does the payment take to process, and does this mean there's a time delay between a user joining and actually being able to access protected content on the site? Just a little confused about what's happening....

Any advice would be much appreciated :slight_smile: