Thanks to both for responding -
I can open my account at 1Password.com with one password. The icon on my Windows desktop (titled "1Password 4" which opens an exe in c:\program files\1Password 4) opens by saying enter your password for your vault - and it will not open with the account password. I can open it - but with a different password.
I have never used 1Password before. I did import logins from Dashlane and then deleted Dashlane.
Is there a solution ? Kind of frustrating to need two passwords to open 1Password.