Emlalock paired with a Realtor key box - anyone tried it?

I trust this counts as a “device.” I wasn’t certain if this was the right spot for my post. You might know about Emlalock, their web-based service. Essentially, you upload an image (one that hasn’t been seen yet) and they hold it back until a set time in the future. The goal is to control access to a combo lockbox containing your chastity device key. In theory, you can randomize the combination, snap a photo of the realtor keybox door’s reverse side to log the code, then secure your key inside without knowing the number until Emlalock releases the image. It sounds like a solid idea, yet my specific setup doesn’t work with it. The issue is that you have to dial in the combo on the realtor box itself to slide the latch shut and lock it. Is there another model better suited for this use?