IsoMax

Unfortunately, several months have passed, but the problem has not been solved, and given the fact that the problem has been known since 2018, this greatly disturbs. I purchased the application in order to use isometry, but I can not use this app. In this case, can I return my money, and if so, describe the procedure - to whom and what data should be provided

I can not draw with grids The problem with the grid during the zoom process, it trembles and moves (see attachment) iPad Pro (10.5) Affinity Designer (1.7.3.1) IMG_1530.MP4