I'm interested in using this. A few questions.
See the following posts for discussion on an alternative approach that might help you. It works on most devices including windows tablets, android versions 4.4 and higher, and iOS.
https://communities.bentley.com/products/geotechnical1/f/geotechnical-forum/156338/inputting-data-in-the-field---quickly-and-efficiently
https://communities.bentley.com/products/geotechnical1/f/geotechnical-forum/189533/gint-collector-for-apple-iphone-or-ipad
https://communities.bentley.com/products/geotechnical1/f/geotechnical-forum/192430/gint-collector-for-32bit-ios-or-windows
The second link above includes additional links to videos that demonstrate the approach and discuss advantages and disadvantages.