Custom shortcode not working after update

I updated the Membership plugin to the latest and the custom short codes were not working. (I understand they are now a legacy thing) I worked around one of the issues, which was making a red ''click to watch full film'' appear when the customer bought a subscription.

The issue is now with the green ''subscribe to stream'' button which was wrapped in custom shortcode, which would make the green button hide upon a paid subscription, but appear when there was no subscription purchased.
Trouble is now that the green button always appears, and some users think they have to subscribe again, even tho they already did and the red button is available.
here is an example

suggestions? Thank you