In my opinion, the most recent drivers for your GLEDOPTO GL-C-008P device are here:
This set of drivers does not mention the GL-C-008P model explicitly, but it is worth trying.
Follow strictly the instructions how to assign the main driver, then press F5 in the browser and you should see a child device created at the bottom of the main device page.
These GLEDOPTO controllers have 'specifics' that make them not 100% compatible with all Zigbee hubs. My feeling is that Gledopto has been patching their firmware, until it worked satisfactorily with Philips Hue hub, and they have stopped there. ... Everyone's target is to get a share of the Philips H*e market,,, (A lot of OEM put the asterisk in the Hue name because of some legal concerns, most probably,,,)