Hello Tony Andersson,
If your Microsoft Authenticator app is not working and you need direct support in Sweden, the official channel is Microsoft Support. You can reach them by phone at 08 55 99 00 00, which is the Microsoft Sweden customer service number. When you call, specify that the issue is with multi‑factor authentication so they can route you to the right technical team. Alternatively, you can also open a support ticket via the Microsoft 365 Admin Center if your account is business‑linked, or use the support option directly in the Authenticator app under Help & Feedback.
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Thank you,
HL.