just stopped working! I have not done anything different
It might be an anti-malware solution that got an update and started blocking 1Password.
Please use this guide to generate the 1Password diagnostic report and email it to us at [email protected]. Also, in the email, include the link to this thread along with your forum username, so that we can connect the email to this thread.
Let us know here when you've sent it, so we can confirm we got the email.