Do I have to wait for an install link?

No, there is nothing to wait for. nouz is installed from the Shopify App Store, so you never ask for a link. Click Install on its App Store page. Approve the read-only access Shopify lists on its own screen. Your store is then connected, and the first sync starts at once. It brings back your entire order history.

What happens in between takes a minute or two. After Shopify's approval, you sign in to nouz or create your account. nouz then asks you to confirm which workspace the store joins. A new account then picks its plan on Shopify's own plan page. After that, the onboarding opens on the import.

Shopify's approval is valid for 30 minutes. If you take longer, open nouz again from your Shopify admin, under Apps. You land back on the same question in a moment.

Only an owner or an admin can connect a store. A workspace already at its plan's store limit is asked to upgrade first. Stores connected earlier through a direct install link stay connected as they are. They keep paying the way they always have. There is nothing to reinstall or move, and their costs, rules and history are untouched.