Hi -
The developper develops, and it's a 2x full time job.
The community may help with precise questions.
For OP: there is no total profit file or such in Gunthy.
Simply check every day your total currency (the main one, like BTC), and calculate the difference.
You may start a spreadsheet?
But there are some third party solutions, like some totalling earns/losses... please find them in forum?
Thanks!