Distant access to Hue

I’m looking to connect to my hue bridge with Hue Essentials from a fixed PC outside my home. After performing a port forwarding on my box, I tried a manual connection with entering the fixed IP of my box and I was able to connect the Hue bridge remotely, recognizing all my equipment. But then I have a problem accessing my devices, like Hue Essentials got disconnected. Do you have an idea of ​​the problem encountered? Thanks.