Change domain & project name

Hello i have a problem with offload plugin.I have a wordpress project with about 100000 media and i uploaded the media to the amazon with the offload plugin.The project works fine but when i changed domain and the project name then the images lost from the wordpress.I can see the images in the media but in the site inside the posts the images point to the old url not in the amazon.The fueture images works fine..Also the path when i clicked in the images shows in the old url lets say ..Before i had

myDomain.gr/MyWordpressApp/wp-content …. <– My Old Domain and project name

and now i have

myNewDomain.gr/MyApp/wp-content …. <– My New Domain and project name

But the wordpress site show to my old url