Go to Admin → Integrations → Canva and click Connect with Canva. You'll be redirected to Canva for authorization, then automatically back to Senly.
The connection uses a cookieless PKCE flow: the OAuth state is stored server-side in the database instead of in a cookie. That means the connection also works in incognito windows and in browsers with strict tracking protection (Safari, Firefox with ETP, Brave).
After connecting, Canva designs from linked clients automatically appear in their client profile.