Why isn't Cachly showing all caches on the Live tab?
Check to see if you have live search filtering enabled. The funnel icon in the upper right will be a solid color when you have live filters enabled and the message "Filtering On" will show at the top of the map. Tap on the funnel icon to go to the Search Options screen. Tap the Reset action button to return all search options back to defaults. New searches should now return all available caches in an area.
Cachly is limited in the caches that can be shown if you are a Basic Member of geocaching.com.