FT8CN configuration of CLOUDLOG ?

[F4JWS]

hello, my cloudlog works perfectly.
I use ft8CN which allows me to save my contacts to cloudlog.
I redirected my ports from my external IP to the server hosted at home.
The recording does not work, the test button tells me: fail.
I filled out the apikey correctly, I have the correct IP address of my box. Without success.
Do you have a tutorial or help to configure my server and cloudlog for this?
Thank you very much and 73
from F4JWS op/manu