Hi Alex Dyer,
Thanks for reaching out to us on the Microsoft Q&A forum.
Try refreshing the page, clearing your cache and browsing history, using a different browser, or checking your permissions to ensure you have the right access to create a database. If the issue persists, you may need to contact your admin.
We tested it from our end, and everything is working fine. Kindly refer to the screenshot below.
If you are still facing any issue, please let us know in the comments and where you are encountering this error along with the screenshot for reference. We are glad to help you.
If you found the information helpful, we would greatly appreciate it if you could acknowledge it by selecting the Accept Answer & Upvote options. Thank you.