That is so weird. I don't know why it wouldn't work. Let me try again.
Based on your temps and EWCM I think I would go with day 20 and looking at your past charts.. I am not sure on the opks though, the first maybe could be positive, I so hate deciphering the line opks, is the control line on the right side on yours? On mine and they are line ones also, the test line is way darker than my control line so there is no question, but maybe just a short LH surge?
I am definately not an expert on this either so hopefully you get more helpful responses