Make sure you enter your phone number correctly in the app. After that, you’ll get a One-Time Password (OTP) shortly. If the OTP doesn’t show up within a minute, you can use the USSD option by tapping "Get the code through USSD" under the OTP box. This will let you dial *998*100# to get your OTP. Keep the app open while doing this so you don’t have to start over. If you still don’t get the code after two minutes, tap the 'Resend Code' button to request a new OTP.
If you are still unsuccessful after several attempts, please contact Fido Customer Support.