Go to Settings > Social Sets then select the Social Set you want to connect a BlueSky account to. Scroll down and click BlueSky Profile.

Enter your BlueSky handle and app password. You can generate an app password here. Click Confirm.

You can confirm you connected it by looking for it under Connected accounts on the Social Set page.

Occasionally your BlueSky account connection may become expired, which can happen for a number of reasons like changing your password, enabling two factor etc.

To avoid failed posts, and other issues, you must refresh the connection as soon as possible.

Go to Settings > Social Sets then select the Social Set your BlueSky account is connected to. Scroll down the page until you can see it and click Refresh.

If you are redirected to BlueSky, follow the prompts to refresh the connection.