Waste of time and money

Worst app ever! I used to like it and i bought things inside and then it had a problem with crashing so i deleted it but, then when I saw that the crash was repaired, I downloaded it again and I couldnt restore my purchase! Now I cant even open it! Please fix it I beg you and add a restore purchase button!!

Tonnerre12363 about Sticky - simple notebooks, v3.1.1