I checked my network its working fine.I tried different browsers and still not working keeps loading.Sad part it i have some bitcoins stuck there.Last night site was working well so i deposit some bitcoins and fall in sleep.
Today when i tried to play ..site not working keep loading.Cleared cookies and everything still not working.Hope I can at least withdraw my bitcoin.
Try to load
https://primedice.com/play or
https://primedice.com and also check with incognito mode. Something is wrong on your side i guess.