plunger gun dog level glitch?

[N1BBL35]

Just bought the game for android! Love it! However, I'm having a bit of trouble with the dog/oil plunger gun level. I got the oil can to move upwards... accidentally hit the wrong button... but now I can't seem to get the oil can to move again. The green 'play' button at the top seems to do nothing... it would really s ink to have to start over...

I'd appreciate any help I can get

[Alex]

I think your problem has to do with the position of the oil pumper floaty thing.  Try this.
"Is the canister of oil in the middle position? It needs to be before you can move it to the 4 o'clock position."