Alogic MXQ

I've got an MXQ Android box with Libreelec pre-installed.
Just recently the hand control that came with the MXQ won't let me select anything with the 'OK' button, after the box has been ON for about 30mins, although I can navigate around Kodi but when I try to select a 'channel' nothing happens and I have to plug in a mouse in order to select,
Is this a common prob or am I just dull.
Thanks for any remedies or suggestions,