When you go from a premium user to a free user, all your flipbooks will get free user limitations, they will not be removed from your account.
If at any time in the future you decide to repurchase a premium subscription, your flipbooks will become premium again.
Here's a list with some of the limitations a free user has:
- each flipbook will have a watermark;
- only the first 15 pages of the flipbook will be displayed;
- you can only use 3 PDF files/flipbook;
- 10 000 views allowed per flipbook/day.