Improve ReactBuilder-based E-commerce Storefront

My Reactbuilder-based storefront is live but a handful of small features still need polishing. Supabase handles the data layer and Mollie processes payments, so the work touches all three parts of the stack.

Here is what I still need:

• Enable me as from an admin perspective to cancel a monthly product subscription from my dashboard and the change to be reflected in Supabase and Mollie.  
• Present a single-click upsell immediately after the initial checkout is completed, with proper tracking of the extra purchase.  
• Trace and resolve the current webhook error that sometimes blocks order updates from reaching Supabase.  
• Set up reliable automatic emails: order confirmations
- make sure I receive emails (as currently that is not possible - private email in use)
• Add tracking system in dashboard (conversion rates, + traffic source like Facebook, Tik Tok, Instagram)

Website was built with Reactbuilder, Supabase, and Mollie as payment provider.