Unable to create a SSH key on ChromeOS with 1Password browser extension

I am attempting to create an SSH key from the 1Password browser extension on ChromeOS, but am getting a message: “Creating and editing keys requires 1Password 8”.
All well and good, except, I already have version 8. What am I missing?

1Password browser extension version 8.10.68.14
81068014, on STABLE channel

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