Thank you for reaching out.I understand you are not able to select the correct options listed when you are creating a Alias record.
I could not reproduce this issue on my end and for me the resources were listed correctly as shown the image below and I could select them.
From your screenshot above it does not look like the list of resources is populating as it did for me.
- Please make sure that you have selected the correct subscription where the resources are located.
- This might be an Azure Portal UI issue and clearing the cache might help in resolving the issue. Trying another browser can also be helpful here.
- As documented here please confirm you have registered for Microsoft.Network resource provider. To create alias records, you must register the Microsoft.Network resource provider. If the DNS zone and the alias target resource are in different subscriptions, both subscriptions must be registered.
- If above does not help, this might be a due to Azure Portal issue and a creating a support request will help troubleshoot this issue. If you have a support plan you may follow this documentation to create a support request. Submitting a browser trace along with support request will help expedite. Please let me know if you need help in creating a support request.
Hope this helps! Please let me know if the issue still persists and what were your findings from the troubleshooting steps above. Thank you!
Please "Accept the answer" if the information helped you. This will help us and others in the community as well.