Looses my sketches

Lately since the new update, whenever I have my art I leave and then later I come back. But when I come back, it goes straight to my library of sketches and then my last sketch is gone! Ive lost about 3 completely finished, beautiful pieces that Ill never get back because of this stupid app. Im so angry right now and some took me so long to make and I come back on to see my hard work gone. Im so frustrated with this app I just am thinking about deleting it all together. Please fix and with some way maybe bring back my art.

Jayjay1588 about Sketch Club, v2.0.6