Memobird G3 hangs while printing (Sending Icon in the app)

Memobird G3 hangs while printing (Sending Icon in the app)

When I print with my G3, it gets stuck in the Sending Icon even if i've already paired it with my phone before and used it already a couple of times. I just noticed it this year. I can't even pair it again. Help please. I can't even press the power button twice because it shuts down. I want to try pairing it again but it won't let me. :(