Once you die in flappyflap, you should be able to advance to the next game. To die you just need to crash into a pillar. What exactly was the problem? Once you die you will be on a win screen, on there click to continue. If its not that then could you post a screenshot of what you see or a short video(that would be the best), that would help me try figure out what's going on.
I had a bug the 1st time as well: the game told me when typing “run cookieclicker.exe” that there was no game found… I just restarted and it worked So, when launching flappy flap, the screen gets populated with pillars but no “bird”, I waited until my screen was white, I thought it was a weird and slow feature. Then I started it again but got the same issue…