Originally Posted by KingCanute

Usually I find the SMS and email arrive within seconds of each other. The SMS didn't arrive yesterday for me but was fine again this morning. There can be occasional delays with any email or SMS coming through, particularly if you are roaming, that may be nothing to do with QR.

Once you get back into your account, be sure that your settings include sending the OTP to both. Belt and braces, you only need one.