Vst connect = error "Playback Avid DNxHD license..."


I try to establish a VST connect session with client.
Worked 3 times. Today (nothing changed) I get this message launching the vst connect :
Playback Avid DNxHD license requires the installation an licensing of the Video Decoder blabla.
I have that license. I know steinberg changed from dongle to “software” something. Since then it’s a mess. I don’t know how to solve this. I know I did an operation to activate that license again from my dongle to news steinberg system.
But then again… it worked well last days why is vst connect now upset about this ?
If I don’t launch vst connect the session works fine.
result. I can play my video localy but it is not streamed the performer as before.
any help ?