Very good support from the developer – Car Payment Calculator Mobile Review

I wrote the review below, and it didn't take long for the developer to contact me to advise me what I might be doing wrong. After a couple of correspondence, I was shown what I was doing wrong, and all is well now. Upgraded from 1 star to 4 stars. I just downloaded this app tonight, and it's very frustrating that I can't get it to work. When I choose the first screen and start to enter a value, the numerical keyboard comes up from the bottom of the screen and stays there. The only way I can make it disappear is to close the app. Maybe I am doing something wrong, but it shouldn't be this hard to figure out.
Review by sl9199 on Car Payment Calculator Mobile.