New Projector Setup for screen adjustment

100 Inch screen we bought from VAVA
We bought Chroma Projector from VAVA

We have built the screen for 100 inch and it looks good
When we project the screen there are some curves on the top and I am not understanding how do I adjust this setup
What is the next step, whom should I call?

Please help me fix this
I can take pictures and attach it if there is a place holder