Hello malin245,
Thanks for reaching out to Apple Support Communities. We've reviewed your question and it looks like you are running into region detection issues with a Facebook feature. It's understandable that you'd want this resolved, so allow us to assist with that. Confirming your Apple ID region is a good first step. It sounds like you did check that, but just to make sure, these steps show you how to look: Change your Apple ID country or region.
You may also want to check your region settings on your device, as well:
If you find that your region is selected correctly in all areas, we would suggest reaching out to Facebook directly for further assistance. Have a fantastic day!