You have nothing to worry about! In this case you would receive another SMS with the joining details. This is usually sent closer to the event.
For “Watch On BookMyShow” events, you can simply click on the “Join From Here” tab visible under the purchase history.
Please keep an eye on your WhatsApp! For certain events/games, the joining details are sent by the organisers closer to the event.
You may initiate a LIVE CHAT if you need any help.