Hi,
This extension is good but we were facing issues on multi-store instance, so we went with another vendor.
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Magefan's reply:
Thank you for your review. Our extension actually works well with the multi-store. There is an option in the extension settings (Stores > Configuration > Magefan Extensions > Login as Customer > Store View To Login In) that enables you to choose what store view to login to. We've contacted the client to establish further steps of resolving this request.