HACS not working properly

Hi. I have a problem installing HACS on my HA.
I’ve done the correct procedure I think, but when I have to insert the code to authorize github to install HACS, it says “Congratulations your device is now connected”…. When I come back to HOME ASS. It’s stuck on “waiting for device activation “ loading forever and it doesn’t go forward to the next step. Tried many times even with different pc or tablet but nothing. I don’t know what to do .