New T-Mobile Sim Card Five day wait?

I got the new SIM card for T-mobile account from the recent sale. I put it in and it said “Emergency Calls Only” but I seem to be able to get their text message. Ofcourse I can’t understand them.
A friend told me that due to the volume of new accounts, there will be a five day wait. It doesn’t’ even prompt me for a sim unlock code yet.

I hate asked too many questions and I figured some here has received the same card. Please tell me what needs to be done. Will the card automatically come active after the five day wait? Will I have to do something? Thanks