Checking the Paypal and Stripe stuff on my site is correct

Hi guys

The subscription part of my site is all processed via Stripe…and the store part of my site is handled by Paypal. I just want to check there’ll be no back-end confusion here and my customers won’t be led up the garden path.

Also, I know I need to verify my site to sell stuff. Can you tell me what I need to do, please? (Forgive my woeful ignorance).