Problem with always "Deep Learning Studio is starting" for DLS 2.5.0

Hi, today I have downloaded DLS2.5.0 and installed the desktop application fully without a problem, however after installation, I tried to launch the DLS, but I always encountered “Deep Learning Studio is starting.” I have checked the logs which show:

Starting Deep Learning Studio…
Checking GPU support…
GPU supported
[21:37:04] downloading CIFAR dataset…

The thing is the downloading process never ends even after hours. And I have tried to use a proxy to check if it was caused by an internet connection problem but without luck. I also tried to close my firewall software but in vain.

Anybody here knows ways to solve the problem? Please help me and thanks in advance. BTW, there is no space in my application installation address.