I watched the video here, where was shown in the piano roll the arrow, it was named like am chord stabs and to tap there, I can listen the amount of notes repeatedly. I have original notes bright colours and then I made them twice, those looped notes appeared grey colour. Repeatedly I only listen bright ones. Why? How I can make bright last grey ones? Then I tapped somewhere on piano roll and the instrument name changed from light green to dark green and all the notes, bright and grey ones, disappeared. Why, to where and how I can get them back? All these notes are still exist in timeline. Videos included. https://youtu.be/CE6fmcOWvMc https://youtu.be/jB7JykQvDvM

GB is only looping the first bar because in the video showing the editor panel you have one bar selected in the Cycle ruler [the yellow bar above the track lanes] -- extend that to include more bars or turn Cycle off [shortcut "C"] to play the rest. The notes after bar 1 are greyed out because you used the Loop trim tool to extend the length of the Region by repeating it -- that's normal, if you change the Cycle length the greyed-out notes will play. [You must have dragged the right edge of the Region with the Loop symbol -- the little circle+arrow that pops up when you hover over the upper right edge of the Region].