Hello Mabilo and welcome to the ArtRage forums 
This is quite likely to be only something one of the developers can address as there are no settings other than the ability to choose which language AR6’s UI runs in.
You can contact the ArtRage team here: [email protected]
Give as much info as you can about the problem and info about your Operating System and the version of ArtRage you are using.
Hope you can find a solution soon.
Maker Of Replica Macoys
Techie Stuff:
ArtRage 6.1.1 ~ 15" Macbook Pro ~ macOS 10.14.6 ~ 4 Core i7 3.1GHz CPU ~ 16GB RAM ~ Wacom Intuos4 M