I initially thought the same but if you look at where its at currently http://ibb.co/cByf2w that signal was correct regardless of when you sold according to those pictures you posted.

As far as signals go it's never going to pick the absolute top but more of a range yet due to the ticker being live and stylised it has to constantly update in line with the price yet the signal is still the same.

 I was looking at the XRP chart yesterday and it had a buy signal and the price went lower and then a second buy signal. This thing isn't always going to be right. For proof of this it's in my video here: https://www.youtube.com/watch?v=teCa9p-ge_g&t=582s