So, I just started settling down just to find that all caves in my area seem to be flooded (no ocean in sight, but I'm next to a river).
So I thought I'd move, but I can't pick up bronze chests with ANY wrench. I cheated them all in, just to try, after making the one mentioned in the Copper Chest quest from the little resources I had. No luck.

Are they even supposed to be able to be picked up? Asking because same mod author also makes Reinforced Shulker Boxes.
If not, I guess it's just the quest text that needs fixing.

Version is 2.0.4, installed with Curseforge.

Well, Copper Chest is 'regular' chest. This means that it is usually not supposed to hold contents when broken whether through wrench or not.

As for the quest description, I think it is a bug, because it say 'Storage Unit', which is another kind of storage block.

Also, the feature of wrenching a chest is 'not yet implemented'. Such feature usually require sepcial KubeJS scripts, which is non existent right now.
Maybe I will start a PR implementing this?
Wrenching a chest will be too powerful, making backpack totally useless. I dont think this is a 'feature to be implemented'.

Where exactly in the quest book is the erroneous text you're referring to?

Right here on the first page: https://i.imgur.com/9QJtOsN.jpeg

It does indeed say Storage Unit, and I see that you actually get the wrench if you do the Storage Unit quest.
So I guess it's a mix up. https://i.imgur.com/StPuQpd.jpeg

Alright, then this issue will be closed