Your instance does not support GPU

I’m working on a Dell XPS 15 with a 1050 Ti.
VS Community and CUDA are installed and the Deep Learning Studio Manager prints

Checking GPU support…
GPU supported.

However, when trying to launch the mxnet-gpu-1.0.0b environment a pop-up appears, saying

Your instance does not support GPU. GPU is required for this environment to work. Do you still want to launch it ?

If I click OK, a tab opens ( but it refuses the connection.

(Chrome 75: This webpage is not available ERR_CONNECTION_REFUSED)