So I have noticed something concerning at least to me. If I locate a place in Google Maps and copy the coordinates and paste them into Kurviger, the location winds up being way off. I have attempted editing the coordinates by eliminating trailing numbers one at a time in order to try and get it close to the location shown on Kurviger but no luck. This was attempted using layers on Kurviger so as to not interfere with any actions that might be happening at the main level. Sort of like attempting to put it in its own VM. This is easy to duplicate as I have on several occasions. This so far has only happened when placing 1 location like a hotel or pub in Scotland.
At latest in this section, I struggle to follow your line of thoughts. Could you post some screenshots to better understand how are you using the app? Also a couple of coordinates where the problem appeared for you would be helpful.