Good evening Jessica and welcome back!
Thank you for reaching out to us.
We are sorry to hear about the fact that you are unable to save the RSVP ticket to WooCommerce.
I would love to help you with this topic.
Currently, it is not possible to change the ticket type from RSVP to WooCommerce after it has been defined.
This is something we are working on fixing. Unfortunately, I cannot commit to a release date at this point. But stay tuned you will be contacted when the fix will be completed!
In the meantime, the simplest thing to do is to create a new WooCommerce ticket and hide the old RSVP ticket from the front-end.
Or, if you backup the RSVP ticket data, you could delete it.
From there you would operate only with the new WooCommerce ticket.
Let me know if I can help with that ?
Best regards,
Geoff B.