I am the top ranked Freelancer on Upwork for XenForo and Forum Development. I can pretty much get anything done with XenForo that you can think of. I have 7 years experience administrating, customizing and developing addons for forums.
I also specialize in forum imports and can convert from any system to XenForo.
I own three forums including one members only forum. I have extensive experience in running a paid community with membership based off Paypal. I have worked extensively with the Paypal Recurring Payments API.