Or you can load up caches in the Live tab, then tap the ... and choose to save those to an Offline List. Or, you could import a GPX of caches. Many ways to have caches offline.
When posting a support question about Cachly please help us by providing the following:
Cachly version number
iOS version
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Screen that issue is happening on and if you can replicate it
If you are a Regular or Premium user of geocaching.com
GC code if your question is about a specific cache