Both are located in your website root. So you should be able to access them like above links for vibethemes.com
Possible reasons for PWA not working :
Missing Service worker file
Missing Icons in Manifest.json
Scope mismatch of manifest and serviceworker
Huge Page and loading times
Each of these have a different debug method and for 1,2,3,4 you can attempt re-generating the service worker from WP admin - Vibebp - Settings- BuddyPress but in general to debug you have to open your site in chrome browser and look for errors in Application :
Editing Elementor Pages When Service Worker is Enabled
When Service Worker is enabled in Vibebp - Settings - General. You are not able to edit the pages in Elementor. This happens as the service worker caches scripts and Elementor is not able to work properly. The quick fix is to unregister the service worker on the page while editing in elementor.
After clicking Unregister, reload the page and your page starts loading normally. This will work with all the page builders(whatever you are using).