Most of my LTDs from 2021 are gone... kapoot and I know I am not alone.

Better Uptime or Betterstack as we now call it, is still around. All the features they promised when they launched are still there. New features... not all new features are included for AppSumo users but plenty of them are included like new integrations with apps like slack, teams, etc. which were not available when the LTD was launched. I have been using this product for quite some time. Sometimes the monitoring doesn't really alert me. I also just have 3 monitors that I am using. But this product has definitely paid for itself. Good work by Betterstack team!