Please find all the problems with New Blog Templates plugin configuration and implementation below:
1. Plugin doesn't remember what theme user has been selected on the sign-up.
- Test #1: I chose to have an entire page to display the collection of my templates, "As a showcase inside a page...". When user selects the template and then directed to sign-up/register BuddyPress page, everything went well except after their logging-in to their freshly created account, it didn't remember the chosen template user have just selected before their signing-up.
- Test #2: "As radio-box selection with descriptions " was set, the same problem still persists. After logging-in, site theme was set to the WP default, TwentyFifteen, even though the theme was deleted long time ago.
2. Do I need to make a default theme at all because I don't want to?