@Corjan-Meijerink here is the route: https://www.myrouteapp.com/en/social/route/4389253?mode=share
I think the problem after WP # 3. Between WP 9 & 10 it displayed ViaP # 12 as the next WP. At that point the calculations at the bottom for next Wp, ViaP and route end were messed up. After out stop at ViaP # 12, I restarted the route at WP#13. Not long after the Next WP display was ahead again. I'm not sure when the white flag was displayed, Somewhere after WP # 20 I think. It disappeared after the next WP. Hope this helps.