Ok guys, for those who tried to get a shiny but didn't or got a shiny but with the wrong nature: We have done a bit testing.
There may be something wrong with the RNG Reporter. For our example we supposed to have our shiny on the 211th PID frame, Sweet Scent. While the nature was correct it turned out not shiny.
When we looked up the PID it had the PID that supposed to be on the frame after, 212. Now is someone eager to explain what went wrong? The nature is correct but the PIDs on the list are shifed by one.