I have been playing quite a lot with my lock. The only positive with my lock is that it got the old bootloader so I can upgrade and downgrade the firmware as I wish 
At least here at me, the solution has been to install an ikea repeater (the one that comes with their blinds) close to the lock.
After a couple of hours, the lock will route through the repeater and so far, I have had NO problems whatsoever.
No mater how long it’s been since I’ve used the lock, it reports right away when using it, both through the Danalock app and also manually (and with Danapad)
I also got a bulb nearby (actually closer then the repeater) but I guess the repeater function in that is not that good as the repeater itself.