At the time of this writing, there is a widespread error that says “Unable to find a valid license for Diablo IV (Code 315306).” This is happening, obviously, to people who very much have indeed purchased the game
Diablo 4: Invalid License Error [FIXED] - VeryAli Gaming
Unable to find a valid license : r/Diablo
Unable to find valid licence error - ps5 : r/diablo4
Review: Diablo 4 (D4)
Share-Play on PS5 and Early Access. : r/diablo4
Diablo 4: This Trick Might Fix That 'Unable To Find Valid License' Error - Gameranx
Diablo 4: 'Unable to Find Valid License' Error Fix
Unable to Find License?! : r/diablo4
Is D4 down? I'm getting a cannot find valid licence error on PC. : r/diablo4
Best VPN for Diablo 4: Protect Yourself From DDoS Attacks