It’s not a big deal, I’m not looking for BuddyPress to have support for Elementor. However, I do find it interesting that a simple redirect from BuddyPress breaks Elementor. The page I created is separate from BuddyPress and successfully works with or without the BuddyPress Register redirect set-up correctly. I would think telling BuddyPress what page to use for the Register page would be a simple redirect and independent of BuddyPress. Thus support for Elementor would be irrelevant. I realize there may be more at work than I can see, just my two cents. Either way, I think BuddyPress is a great plug-in, I just wanted to offer some feedback about the issue I found. Good luck with the future of the plug-in!