Recovering from misconfigured plan - free gap & expiration dates

Hi, I came across an issue on my site where we had most of our members subscribed to a plan where the "Manual Renewal Extends Expiration" date was set to allow for a free gap.

We also have Allow Free Lifetime Plans enabled and plans created

It seems we are running into some related issues and I'm not sure how to work them out:



a. When a renewal payment comes through from Stripe, sometimes we see a user where the free gap rule isn't followed: for example their membership expired in 2019, the payment came through today, but the renewal date jumped to 2020 instead of 2023.



b. When I check on the user in question, I see that their membership is sometimes active but their account also indicates a free lifetime membership.

I think I need to disable the free lifetime membership plan creation, how do I roll this back retroactively for existing users and subscriptions?

How do we adjust the settings so that when a Stripe payment comes through to renew a user's membership, it actually follows the "whichever happens last" rule in the plan settings.

When I change these settings, does it apply to existing users? Or only new subscriptions?

Thanks!

Are these manual renewals or recurring payment renewals? Free lifetime plan is unlikely the culprit here.

These are manual renewals.

Update: seems to be both manual and automatic renewals

Review their subscription in CBSubs > Subscriptions and verify if their "Expiration date" column value is incorrect. It should be 12 months after their "Last renewal date" column value. What are the column "Subscription date", "Expiration date", and "Last renewal date" values for a user where this failed to work?

Recurring subscriptions will never have a free gap as they renew automatically on the date they're due (when they'd expire).