Okay, 20th April, I can hold a last make-up of the 4th session at CEST time, approximately starting at 4 or 5 pm. Obviously it depends on the students, when they can make it. So please write down here, if the time is not suitable for you.
Today or any of the weekdays are not really suitable for me. So if possible, then a weekend time would be better, by the way my time zone is now: CEST time (so GMT +2). I'm able to hold the make-up on Saturday or Sunday this week. So let me know which time is good for you.
Of course others can come as well to this make-up! Feel free to ask and/or come.