Hello Leonor Ammundsen,
Welcome to Microsoft Q&A forum.
I’m sorry for the inconvenience this issue is causing. For now, please try following the steps provided by Q&A Assist (check People/Contacts, Deleted/Recover deleted, any other Contacts folders, etc.).
If the issue still isn’t resolved after completing those steps, or if you run into any difficulty at a specific step (for example, you don’t see an option or you’re unable to restore anything), please reply back and I’ll help further based on what you find.
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