The conflict is with audio player ZoomSounds which I use to give my membership access to audio trainings.
They’ve built an amazon S3 integration using the newest SDK, which apparently generates conflict with other plugins that use old sdk.
Here is my test page: https://szybkanauka.pro/lekcja/it-is-ok-for-me/
You would need to deactivate wpdm amazon s3 addon to see well looking and working audio player on that test page. Please have in mind, that this site is my live ecommerce & membership.