DITTO… I am having exactly the same problem on my Blu Dash-M, Android 5.1
The app starts and flashes a screen with a (vertical) “…” then within a fraction of a second goes to a similar screen with the the tool Icon (just like in the video posted below).
If I am super fast, I can hit the ‘…’ before it flips to the other screen. I see the ‘preview apps’ screen, but before I can click anything else it goes to the screen with the tool icon.