Hello loggor​! 👋
Thanks for reaching out! I've take a look and it doesn't look like that's a standard username field but you can have 1Password fill that field with a little workaround:
- Open and unlock the 1Password desktop app.
- Create a new Login item and give it an appropriate title for the website.
- Add the website address to the Login item.
- Add a new custom text field to the item and called it: AccountID
- Save the item.
Then, open the website in your browser. Click on the 1Password icon in your browser's toolbar and click Autofill next to the item you just created. 1Password should fill your social security number.
-Dave