Occasionally, ios will pick an out of date login credential. In the attached image, the suggested username (redacted) is the old username that has been overwritten (for a few weeks) by a new username. it seems random as to whether it shows the current username, or the old one.
I only have one login within 1P for this site.
I am using an ipad Air 2 with the latest versions of 1P and ios.
1Password Version: Not Provided
Extension Version: Not Provided
OS Version: Not Provided
Sync Type: Not Provided