Log-in setting issues

Trying to troubleshoot the log-in options of bbp Style Pack. I’m also using bbp Private Groups.

1. I have “Add login/logout to menu items” active.
Login menu item description is “Log in”
Logout menu item description is “Log out”
Neither item has a css class listed
Items are set to “Only show on forum pages” and “Only show on the primary menu”

2. Login page is left blank. (I use the LoginPress plug-in to customize the standard log-in screen.)
Logout page is set to https://localhost:8888/ab/ (IOW, the home page)
Logged in text is set to “You’ve already logged in.”

Other options in section (2) and all in (3) are left blank.

PROBLEMS:
1. The forum page only loads if I type in the URL explicitly. If I use the menu item that should load the same URL, the site reverts to the home page. This behavior occurs whether or not I’m logged in. Is it a coincidence that that URL serves as the logout page as well?

2. When I do load the forum page as a logged-out user, I get the “Oh bother” empty-forum message rather than a “please log in” message or something more appropriate. I know how to customize the messages, but this one also applies when a forum actually is empty. How do I fix this?

3. When I log in, I’m taken back to the home page, not to the forum page. Now I’m faced with problem (1) above again.

The private groups plug-in is working properly. When/if I do manage to load the forums, I see the correct sections for the user credentials with which I’ve logged in.

BBPress 2.5.12, WP 4.7.1, bbp Style Pack 3.4.2, bbp Private Groups 3.2.10, LoginPress 1.0.5 running locally under MAMP 1.9.6 with PHP version 5.3.5. I’m using a child theme based on GeneratePress 1.2.41 with version 1.2.92 of the GeneratePress Premium plug-in.