Hi
Have you tried opening it up and unplugging the battery
Doing this usually helps iron out any issue like the ones you are having
If you don’t want to open it up you could leave it on and wait for the battery’s to discharge/die
I would also try removing it from the device that it’s connected to and reconnect or try a different device altogether
Hopefully this helps
If this doesn’t help please let me know
Any questions please ask
Thanks:-)