How do I change the password that I use to open 1password?

@arthurlambert: You cannot change the Master Password of your vault without first unlocking it. If this were possible, it would mean that anyone could change it and then gain access to your data with a password of their choosing! :scream:

And (un)fortunately AgileBits also has neither your 1Password data nor the Master Password used to secure it, so this isn't something we can 'reset' for you to help directly. However, please try the tips in this guide as they may help you gain access again:

Forgot Master Password

If that doesn't help though, you will need to either restore from a backup, sync from another device, or simply start over. Please let me know how it turns out. I look forward to hearing back from you!