That is good. It means that our plugin is now receiving the webhook correctly. The following error usually means that you have mixed up the “test mode” and “live mode” for subscription plan.
FAILURE: Subscription not found. Aborting.
Stripe doesn’t allow the subscription plans to be interchangeable between live and test mode (not like how the one time payment transaction works). So make sure that your subscription plan was created for SAME mode that you are using for the payment. For example: if you are doing test mode transactions, then make sure the subscription plan was created in “test mode”. Edit the subscription plan and check which mode you created your subscription plan. Then make sure it matches with the mode you set in the settings.