Hi @Rens van der Burg (1034400)
It's possible that there's a capacity issue in that region, which is why you're unable to add a SQL server to the West Europe location and might be getting an error "Your subscription does noy have access to create a server in the selected region"
You have two options: either create a server in another region, or if you specifically need a server in the West Europe region, you may need to open a quota support case to request capacity for your subscription to create a server in that region.
Hope this help!
Thank You!