If our team has requested collaborator access, please take a moment to review the notifications in your Shopify Admin. You should see a request from either the email domain @fastforwardapps.com or from Website on Demand Studio, LLC. Taking action on these requests ensures smooth collaboration and allows us to work together effectively on your Shopify store.
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If you're not sure about collaborator requests or want to learn more about how they work, Shopify has a helpful guide that can answer all your questions.

Check it out here: Shopify Collaborator Accounts Guide.