Hey there, Laurent!
I’d be happy to help–but will you please log into you account and post the question to our Community Events support forum? We use the Pre-Sales forum for people to ask questions about the plugins without needing a premium license for support. The Community Events forum is where premium license holders (like yourself) can get technical support.
I will go ahead and close this thread, but you can reference it in your new post. Also, in the meantime, please do check the suggestions in this article because it solves most 404 issues we see.
Cheers!
Geoff