I have deactivated BuddyPress. Here's a screenshot of what is installed. "Hello Dolly" came with my WP installation but it's not activated.
YES!!! This worked! I removed all the settings you referred to above and deactivated BuddyPress.
Whew! That's great!
AGH! NO!! It's still broken. I wish I could post mulitiple screenshots it it appears each post can only have one attachment. So I will do them sequentially. This first one shows the plugin states during my last test. ALL are deactivated except wpForo.
This is an example of three identical emails I received, each with different plugins turned off. All of them were the same.
This illegible mess is what showed up when I registered the new user Lizzybeth. I copied the URL from this and pasted it into a browser to be able to set a password. When I tried logging in using that password, I could not log in. Thinking I may have mistyped it when I registered, I tried to re-set it. That's when I discovered the re-set problem above,.