Thank you for your kind words 🙂 No worries, I am more than happy to answer.
We didn’t have subscription based pricing up until this year (only lifetime deals), but we were asked by so many customers that we added it. I don’t think we will ever up the price for existing subscriptions, it wouldn’t make any sense, even though we didn’t promise that.
We have many thousand lifetime license (non-subscription) customers, who bought the plugin years ago and many of them keep getting new lifetime licenses to this day, even though the price does change from time to time. It only makes sense to change the price for new purchases, bumping existing ones feels like a money grab, unless there is a really good reason for it.
If the sales drop, then it usually means the product is not good enough, it rarely ever means it’s because of the price.