Blank screen on Firefox, can't use

I just installed the extension on Firefox 59 on Fedora 28. I did the setup process and logged into my account. I can enter my password on the prompt but then it does not procced. Clicking again on the icon shows a blank popover.

1Password Version: Not Provided
Extension Version: 1.6.3
OS Version: Fedora 28
Sync Type: My 1Password


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