I had no issues almost for 1 year until the last 2 months where I noticed that all orders are not updated automatically and I have to go through every order in my store and do a manual update which takes alot of time !! It happened more than 10 times in the last 2 months and decided to uninstall the app . Not recommended at all as they were unable to fix this issue .
Update : Nov 11th,2017
I received an email from the company manager who was really professional in solving the issue I had and I was completely satisfied. Thanks.