jbl tune 760nc headphones broken hinge and charging problem

The hinge of my JBL Tune 760NC broke all of a sudden, just the at the part that holds the right ear pad. I also can’t find any screws to even use to open amd fix the device too.

This led to non-usage for a while. An attempt to even charge the device has also not worked with the device charging light not coming up. I have to fiddle with this for about a hour to even see the light flicker unexpectedly.

Kindly help with how to go about fixing this.

Thank you