Hello @Mynooga,
We checked our logs for files sent from your website and found that they have been transcoded successfully.
However, as per your query, you are not able to fetch/play the transcoded version at your end.
MP4's upload and display fine but I did notice the .mov is still labeled as a .mov after upload in the media library on WordPress.
We do not overwrite the original .mov file with the transcoded one, we create a new version of it hence you will still find the .mov there.
Possible checks:
We suggest you once try to regenerate the issue with other plugins disabled ( except rtMedia and Transcoder ). There is a possibility to have some conflicts with other plugins.
Let us know the file name you try and still face the same issue.
Thank you.