ok, let me explain further...i know where to find the lessons. i can get to the lesson page that shows the goldmine series lessons. i already went through all of them a few weeks ago. now i want to revisit them. i go to them and when i click on any of them the screen opens with the words "NO ENTRY FOUND". no other content, on a white screen

this is what i have experienced on 3 different computers and one mobile device. can someone else try to open them so i know if they are there or not? thanks