Hi jbrayton,
Thanks for checking that for me. Would you mind trying something else for me? --
- Disable the integration in Fastmail by selecting "Review access" in the 1Password row, then "Remove access": https://www.fastmail.com/settings/masked
- Disable the integration in 1Password, by selecting the Fastmail entry, then "Deactivate Fastmail" : https://my.1password.com/integrations/active
- Enable the integration in Fastmail: https://www.fastmail.com/settings/masked
- After signing in to 1Password again to confirm the integration, verify that your Fastmail email address is shown in the Integration directory again: https://my.1password.com/integrations/active
At this point, the option for "Create masked email" should be visible on the LinkedIn sign up page you've provided.
Jack