one of my accounts have disappeared

Hello tonia22! 👋

I'm sorry that you're not seeing an item in 1Password. 1Password will never delete an item unless a user gives it a specific command to do so, and even when deleted those items can be found in the Recently Deleted folder for 30 days.

Can you try the following:

1. Open and unlock the 1Password for Windows desktop app.
2. Click your account or collection at the top of the sidebar and then make sure that you're entire account is selected.
3. In the sidebar, scroll down and click on Archive. Do you see your item here?
4. In the sidebar, scroll down and click on Recently Deleted. Do you see your item here?

If you don't see the item in either of these places then let me know.

I am very worried that somehow I have been hacked.

Just to clarify, is there something in particular that leads you to believe that your 1Password account has been compromised? An attacker would need both your 1Password account password and Secret Key to log into your 1Password account and decrypt the data within it. And even if they did so, you'd have received an email letting you know that your 1Password account had been accessed from a new device, and you'd see that new device listed on your profile (in the top right corner) when logging into and accessing 1Password on the web.

-Dave