If you are traveling abroad, you might not be able to verify your WhatsApp account.
The verification code is used to verify that you own the phone number. You must be able to verify your phone number via SMS or voice call. We cannot send the code via email.
If you can check your voicemail while traveling, you may be able to successfully verify. Our automated system should leave you a voicemail with your code on it if you choose the "Call me" option after the 5 minute count-down. Otherwise, you should consider using a local phone number that you are able to receive a call or SMS with.
If you have roaming service enabled, you may also be able to verify your account. Please keep in mind that roaming can incur extra charges.