Sorry for my bad english at first,

i bought me today a devolo 500duo.
at the begin was it fine i have play like 1-2hour with it, on red lights btw,
at some moment i disconected, and my pc wont reconnect to it
it also keep show red light for while and then green light, but even in the green light it wont connect to my pc.
at the start i can found it back into the software of it devolo cockpit. but it disapear and wont show up anymore.
someone who know how it works can help me??

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my bad i forget to say that it is a powerline dlan