Darwinex has a special time period called DPeriod. It can be anything from 15 days to unlimited number of days. Basically certain "amount" of trading has to take place over some time for it to qualify as a Period - logic behind it is like "a full month of trading".
Example: After accumulating 12 periods, Darwin's Experience reaches 10. So if you think 12 periods is too little, and want to set it to 24, you can't do it through experience - hence the period filter is there.
Unfortunately, last I checked, neither equity nor divergence history was available through the API.
I set the hard limit of 60 to avoid server abuse. An important rule of writing software that will be used by others - expect the worst from end users If you have some experience, you can download the source code and run it on your computer after removing the hard limit. If you need help with this I could lend a hand.