A: The Upsell Plugin is a standalone plugin that integrates directly with Stripe and PayPal, it's not a WooCommerce extension. It would essentially replace WooCommerce in your setup.

We don't have a direct integration with Ultimate Membership Pro, so you would want to see if they connected with any of the following "Automation" tools we have a direct integration with:

1. Zapier
2. Uncanny Automator
3. AutomatorWP
4. Thrive Automator

When it comes to membership plugins we have a direct integration with:

1. MemberPress
2. WishlistMember
3. LifterLMS
4. LearnDash
5. TutorLMS
6. WPFusion

I hope this helps. Please let me now if you have any additional questions.