No Bonus Roll Window Appeared

The bonus roll window will only appear upon completing a boss encounter once per week if it's a world boss, or once per difficulty per week for current tier dungeon and raid bosses. You must also have one or more of the required tokens.

You won't qualify for a bonus roll if you were AFK, out of the instance, too far away, disconnected, or if your character was dead for the duration of the encounter.

The reward would either be a currency such as gold or Azerite Power, or an item appropriate for your loot specialization off the boss' loot table. If you receive the currency reward, your chance of getting loot on the next roll will gradually increase until you win an item, at which point the odds reset.

If you met the requirements for a bonus roll and the window did not appear, you may have a damaged UI element or an addon may be interfering:

1. If you can still type in chat, try reloading your UI by typing /reload ui and pressing Enter.
2. If that doesn't help or you cannot type in chat, reset your UI.