ALERT: one of the AI announcement providers is having issues again this morning so you will only get 10 of the usual 50 or so voices. I have notified the provider and I expect to get it fixed soon. The better voices are still available, but I understand if you created teams with one of the now missing voices and you are just adding a player, you are probably stuck until I can get this remedied. Hopefully, this won't take too long to resolve. Also note, this is why I found a new provider that is the source of the voices you can still see. I would recommend switching over to one of them just for reliability.
This has been fixed and all voices should now be available. I apologize for the inconvenience. If for some reason you don't see all the voices, kill the app and restart. That should force it to query the provider again.