Hi guys. So I have a wallmart Onn tv box and just bought a bluetooth keyboard. I was able to connect it but the key (del) won't work. I've installed various keyboard apps, including the button mapper but still fail to make it work, also the latter won't allow me to remap that key since there isn't a delete choice available. I don't know what to do. The other keys are fine, in fact, the (back) key goes back as it should and I thought it may do the work but it doesn't either. Please help. Thank you.