Hi there,
Have you tried looking into the Pin conflicts?
Third-party apps: Before Microsoft attempts to pin a third-party app, it first checks whether the exact same app is already pinned by the OEM on any page. If it is, Microsoft keeps the OEM app pinned in its place.
First-party apps defined by Microsoft on Page 1: Microsoft first-party apps (ex: Microsoft Edge, Mail, Store) pinned on Page 1 cannot be moved by the OEM. If the OEM attempts to pin one of these apps on Page 1 as well, it will be ignored.
Elevating Microsoft first-party apps: OEMs may pin a Microsoft first-party app (ex: Calculator, Camera) on Page 1 and move its position to Page 1 so long as either it is not already pinned by Microsoft on Page 1 or is not pinned.
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