It has been months of people reporting issues with the plugin not working for certain loot containers.
When it works it's an amazing plugin, but it's partly broken currently.
I see the author (Tricky) is updating other plugins, just not this one.

So I say, either fix the problems with certain loot containers (e.g. bradley_crate) or let someone else take over this plugin.

Tricky is not the author, only the recent maintainer per request. The plugin has not had an active developer in years, so I would give them some time to update it.