Choose the correct store
Open Shopify admin, find QuickDesk under Apps, and start Connect there. Shopify opens QuickDesk's one-time approval page; there is deliberately no Integrations entry in QuickDesk settings.
Complete the authorised flow
Sign in to the QuickDesk desk you intend to link, compare the shop name shown on the approval page, and approve the connection. If the link is missing or expired, return to Shopify and press Connect again. Never paste private app credentials into a ticket or help form.
Verify with a safe lookup
Open a known test or internal order context from the ticket workflow. Use no customer record beyond what the support task already permits.