Make sure the extension is enabled in your browser's settings.
- Open Safari.
- At the top left, click Safari.
- Select Preferences.
- Open the Extensions tab.
- Make sure Todoist is toggled on.
Next, add the Todoist button in Safari:
- Open Safari.
- At the top left, click View.
- Select Customize Toolbar…
- Find the Todoist icon and drag it either to the left or right side of the address bar.
- Click Done.