n00b - cannot download encryption key to destroy pool

[handsy]

First time user of FreeNAS here. I have the latest 11.3-U4 installed, and "yes" I've read the User Guide but it's not making sense to me.
As far as I'm concerned I created an unencrypted Pool but when it comes to trying to Disconnect that pool I get forced to 'Download Encryption Key' which when clicked does nothing.
I've disabled Pop-Up blockers but still nothing - using Firefox ESR latest version.
I can't see how to proceed here so any help appreciated :)

 

[Samuel Tai]

First, verify you actually created an unencrypted pool. Does a lock appear at the far right when you examine the pool in Storage->Pools?

 

[handsy]

No, there is no Lock symbol there.

 

[Samuel Tai]

OK, so this is definitely an unencrypted pool. Are you exporting it to import on another system, or did you intend to destroy the pool completely to start over?

 

[handsy]

I want to destroy it completely

 

[Samuel Tai]

You may have run into a GUI bug. From the shell, try as root: zpool destroy -f <name of your pool>.

 

[handsy]

That deleted it ....partially at least.
Pools page now shows pool in 'Unknown' state. Export/Disconnect still asking for Key :(

 

[Samuel Tai]

Try rebooting.

 

[handsy]

The pool has come back after reboot!! What the heck is going on here??

 

[Samuel Tai]

Please provide the output of zpool status -v. Also, we'll need the details of your hardware setup. Make sure your system dataset (System->System Dataset) doesn't reside on this pool.

 

[handsy]

Seems to work now - I added a Dataset in to the Pool, which I hadn't done! I said I was a n00b! ;)
Thanks for help Samuel.