Any financials feedbacks about this bot ?
I am curious to know if it can really make your earn some money or if in some cases, you can lose money.
Yes you can make money. At this time around 40% a year (around 0.1% a day).
The chance you loose money is low: Poloniex exchange can go bankrupt, can be hacked, but that's about it.
Wow really great ! And I didn't find any detailed explanations for the deviation calculations, do you have recommendations for me or some tutorials?
Just play with it a bit. After every change you can scroll down to see what happens.
When you first want to check this before you start lending, then either wait before putting coins in the lending account, or put a number in the "bank" field which is higher then the amount you have. When you see what happens with every change, and you're satisfied you leave the "bank" field blank and/or put coins in the lending account.
Look at this regularly; in my case I didn't lend for a day, because lending rates were dropped below my minimum rate (yes, I was used to get over 50% a year

), so I had to adjust my settings.