I bought the Polaroid Pogo mobile printer.when I first used it, it worked well.today I tried to use it and it is just not working. My phone seems the picture but the printer gets a red flashing light how can I fix this?

That depends on which red light is flashing. If the battery light is flashing, that means the battery is exhausted. Fix it by charging the battery.
If the status light is flashing red, that means the paper is jammed. Fix this by opening the paper door and pulling out the media. Full instructions are on page 3 of the manual.
The battery light is the one marked with a battery. The status light is the one marked with an exclamation point inside a triangle.