Q30's won't turn on

Initially, the headset was switching itself off seconds after being switched on, during use.

Today, however, it didn't turn on anymore.

If I press the power button or the NC button, the blue light comes on. But it won't turn on.

When I plug in the charging cable, the red light comes on.

With the 3.5mm sound cable, the headset also works.

Does anyone know what might be happening and how I can solve it?

Service is not a possibility, because although the headphones are not yet a year old, I bought them through the official Anker website on Aliexpress and they refuse to provide repairs.