What is the difference between Paid and Free versions of XD if they both crash

XD keeps crashing all the time, not saving the work done, some tools disappear time to time, sometimes blending modes get to crash the app totally. I don't know why I pay for the version that I can have for free
When you choose blending modes it crashes whole program, 
Sometimes Shadow color picker disappears, top right corner tools disappear if you don't restart the app.

I thought I would get a decent bug free app if I'd get a paid version but no sir.

I don't understand why I should pay anything if the difference is only shareable links,

Do something!