A. 1. Check spam/junk folder: Sometimes, activation emails can end up in the spam or junk folder. Check there to see if the email was misdirected. 2. Resend activation email: If the app has an option to resend the activation email, use it to try again.

B. 3. Wait a few hours: Sometimes, there can be delays in receiving activation emails. Wait a few hours and check your email again.