If you’ve received your verification code, but it’s not being accepted by Visa, try the following:
1. Type instead of copy and paste
Sometimes copy and pasting may carry over spaces - try typing in the code manually instead.
2. Ensure you’re inputting the most recently received code
Every time you request a code, the previous code expires. If you’ve requested the code multiple times, make sure you’re inputting the code you were sent most recently, as it should be the one that is valid.