A few days ago I jumped into the game and the minute the game space loaded I started clicking to start doing stuff. As I did this something popped up on my screen and disappeared. I saw it for a nanosecond before it was gone but I am thinking it must have been the dev "nag". Its design fits the vague visual impression I got.
So that's another reason there's been no interaction with it - it can be dismissed (and is dismissed accidentally) if you're clicking outside the popup box because you don't have to click on the buttons.
I don't know what to suggest because changing it to a popup you HAVE to dismiss is also dangerous since players can now spawn directly into dungeons and you don't want to be disrupted by something blocking your ability to play immediately in case you're in a dangerous situation but perhaps coding it to pop up the first time you go to an inventory chest in a pub after passing each 25-hour marker?