This is usually caused by an incorrectly selected address in the Regulr settings - but is a really easy fix!
Head to the posBoss Management Site and click on the Regulr tab.
Select Your Place.
Scroll down to the Outlet Address.
Enter your address, making sure that you select the green dropdown that appears (this ties in your location with maps on the Regulr user's phone)
Once selected, give the Regulr app a refresh your (or customer's) phone and you should be good to go!
Get in touch of you have any further issues from there.