youtube shortcode links

Hi
I transferred site from wp.com to org and tried to use the OceanWP theme.
All youtube links in pages and posts is now shown as their shortcode instead to show the video itself.
I understand that if i take off the shortcode and leave the youtube link only – it’s fix this problam.
But… i have a lot of youtube links all over this site. it’s almost impasible to handle it one by one.
Is there any solution for it ?

Thanks for your help
Orit