My clients without paid subscriptions can't add copy, change an image or open a project if a custom font - often a crucial part of their branding - has been used in the design.

Canva for example allows a pro user to let anyone edit their designs, regardless of font's, brand kits or premium features.

The flexibility to allow clients on free subscriptions to edit my projects is mutually beneficial. I don't have to ask clients to pay a subscription to edit my designs, moreover, if they later are thinking of paying for a platform their familiarity with yours is going to have a lot of influence.