I have noticed that red loans need now longer to be compensated. I think it used to be about 10 calender days in the past - has Omaraha given an information about this, maybe I missed it?

It is same as before, loans turn red when they are 90 days in debt and will be sold on the 100th day of the debt.
If 100th debt day happens to be on the weekend then loan will be sold on Monday, because administrator has to approve it. Sometimes we wait few days longer (usually 1-5 days), because borrower has promised to pay and we have some reason to believe that payment might come. These two scenarios are only ones where we wait more than 100 days.