I'm trying to start ACR from Bridge and I get the following error (it's in Dutch so translated it says that the editing of Camera Raw-images is not available because a license is necessary for this product):
I have installed Photoshop Element 2019 so I do have a license.
I believe Photoshop Elements doesn't use Bridge. It has it's own organizer. so as far as Bridge knows, you don't have a proper licensed product. So you will have to open the images through Photoshop Elements' browser.