Hi @zabrinapapin,
This is Mangesh form rtMedia team.
First of all sorry for the inconvenience caused. To solve the issue you are facing you can add the following filter/function in your themes functions.php
file :
add_filter( 'replace_aws_img_urls_from_activity', function(){ return true; } );
this will solve your problem. In next version we will fix this issue. I will notify you when we release the next version with the fix for this issue.
Thanks,
Mangesh