App is great, but glitchy

I bought this app to help me with simple Calc 3 graphing and vectors etc. It really is a great app, but I wish it would plot simple points and vectors in 3-space. Instead you can only graph more complex equations. The app recently began to get glitchy on my iPad. I open it, and it wont let me select anything, it froze. I turned off my iPad and completely closed out of the app, and it still isnt working. But when it does work, its vey helpful.

Kmbal about Wolfram Multivariable Calculus Course Assistant