I'm not affiliated with the project; just discovered it by chance this morning and found it deserved to be better known. So, when I said 'My site will still be online", I meant as a web developper using Polypane, when and if I decide to stop paying the subscription, this will have no impact on the web site I've developped with it. Subscriptions might be a problem when you risk loosing access to your data (looking at you Adobe), but in this particular case I couldn't see the problem.