Support for wildcards in redirect URIs just landed in 1.43.
We don't recommend using these because they are against the OAuth specification (you could look at using the state parameter instead).
But we listened to the community feedback on this issue: https://github.com/FusionAuth/fusionauth-issues/issues/437 and implemented it.
It is still being documented, but you can read about it here: https://fusionauth.io/blog/2023/02/16/announcing-fusionauth-1-43#support-for-wildcards-in-redirect-urls
Hope that helps, @davidmw !