You should see them immediately , if not there can be small delays as a lot of people are registering. Did you received the message on the telegram channel after entering the code with : "Congratulations @X!
Your code was verified successfully.
You have just received your tokens:
100.00000000 SATX
Check your account and share your testimonies" ?

Please check "my balance" on satoexchange later, and if the coins won't show, message them on telegram with the details.