I put all the parts together (Display, adapter board, RPi 1 B+, no overclocking) installed latest Raspian, updated & upgraded.
Everything works fine except one issue: the touch function only works in the right third of the screen.
I am able to move the mouse cursor in that area, nothing happens in the remaining 2/3. Same with the kivy samples.
I disassembled, put things together again, checked cables,... that did not resolve the issue.