Communication between HOG3 and DP8000

Hello, I'm French, sorry for the translation ...
I have a BIG problem... Until yesterday, everything worked very well but today, I could not ensure the show ... I think that the HOG3 console and the DP 8000 does not communicate anymore ... When I open the NETWORK window, it is noted this:
DMX Processor: Used YES / Found: No / Status: Offline
I work in a cabaret, I do not know what to do, help !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Thank you very much
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