Ah ok thanks for the report, we should add a proper warning there!

Pins must be signed by your keys, but you're logged in using one-time code sent to your DMs. Which means we don't have access to your keys.

Please go back to the dashboard, there should be a "Connect keys" button there. It will lead you to importing your keys into nsec.app and connecting them to npub.pro and then migrating your site to be signed by your own keys. After that Pinned post editing will be available, and some other features as well.

Does this make sense?