(potential) Subscription problem

Hi all

I've just signed up to start my build this evening, moving from Wix, and think I may have hit a snag. But, before throwing in the towel I wanted to ask if there's a workaround.

I sell online mock tests for school exams. The tests are built in third party software which is embedded in an iFrame. Customers subscribe monthly to have access.

Essentially I need to setup a subscription which gives subscribed customers access to certain pages on my site. All fairly straight forward, however, I just read that subscriptions are not permitted for digital products, which I suspect this is. If I can't make this work then the party is over. But I really liked square space.

Any ideas?

This looks perfect. Thank you