One of mine mini, goes mental if she's left on her own, if she's with one of the others (there are 4) she's fine, but on her own is a disaster. I put her in her crate (with which she is fine normally) and tried leaving her for 15mins, she couldn't open the doors because they where locked, so she pulled the end wall in somehow, climbed out, opened 2 doors which open toward her and sat at the front door waiting for me when I got back.
Before we started using the crate and on another experiment, I'd gone to the second part of the back garden (6ft wall and locked gate between the two bits), she opened a door, got on the work top, climbed through the top bit of the kitchen window, and appeared on top of the wall and then jumped down to find me.
I have spoken to her sternly about this behaviour, it has had no effect.
(I am also suffering with 4stitches in my left hand today due to her hyper stupidity yesterday, doing some weave training on the field so she goes in to the weave, 1st pole on left shoulder, not right as she's started doing, so she gets food treats just to walk through the poles the right way, so off she goes starts doing it right, gets treats, gets excited jumps up on me (really, really, really NOT allowed), scratches the top of my wrist and basically ripped the jack of my hand all the way down to the middle joint on my middle finger, there was blood, and I've got proper agility club training tonight for an hour, wonder what injuries she's planning for that)
And
George bit my right hand this morning whilst he was trying to bite Julie who was standing on top of him in my bed whilst I was asleep, and then I dropped the big jet wash on my right toes this morning which are now obviously broken
I am fully aware this is not in the slightest bit helpful to you but I would say...
Adaptil plug in things don't work in my opinion.
Ask your vet, if its stressed diazipan works, we use it a bonfire time, I use it more often but mine comes from the docs