Position of inadequate bluetooth transmitter

This keyboard is supposed to be held in both hands, in order to strum the same way that on some mobile phones.
Now the Bluetooth transmitter is not in the center of the device but on his extreme left.
The transmitter is in the left hand when the device is used, disrupting its operation.
So that the signals are properly issued, it is necessary to hold the device only with the right hand, making use of the keyboard almost impossible.
So references the product within the statutory period of withdrawal.