I can only create 3 custom lists in AIPRM Pro? What are private / favorite / hidden lists?

AIPRM has the following types of private lists

• the standard "Favorites" list,
• the standard "Hidden" list (available from AIPRM Plus, with 3 private lists in total),
• and your Custom Lists.

Private Lists are "Favorites", "Hidden" and any other Custom Prompt Template list you create.

The AIPRM Pro plan has 5 private lists in total, 1 for the "Favorites", 1 for the "Hidden" and 3 for you to use. If you purchase a 2nd AIPRM Pro plan you get 5 more private lists, so all 5 are for you to use in a  total of 8 Custom Lists.