Activation Reaper of Souls (Diablo 3)

Was originally bought standard version of Diablo 3. Then purchased the Reaper of Souls expansion. Got a message that activation is successful. But I can't find where it is addition,the launcher can't see in the game too. The game didn't even ask to be updated. Store the tick is next to the addition. The campaign mode is still not finished. Tell me that any school that or how does that work ?