The un treaties should not be a Problem. Germany could Just ignore them Like canada or leave the treaties and rejoin with a excemption for cannabis. Bolivia did this for Coca leaves.

My guess would be its Sonys fault. I have a JBL Flip 5 which works perfectly with my Phone but my Sony srs xg 300 has similar issues as u discribed.

As far as i know the Mass of the black Hole is concentrated in the Center (singularity). But it is surouded by its schwarzschild Radius. Anything that enters it cant escape.