Do you mind opening one of the older photos (that matches the screen) in Photoshop and showing me a screenshot of your screen?
Then do the same with one of the newer photos?
Whoa.
Then this can't be a problem at your end, surely?
Have you changed labs, or is it still the same lab?
Can you double-check that Photoshop's Color Settings are on "North America General Purpose 2" the way they should be?
Oh, sorry. Yes, of course you can edit your raw files in Photoshop Elements.
In Bridge, go to Preferences, and to "File Type Associations". Associate your raw files with Photoshop Elements.
Go to Image>Image Size. When that window opens, make sure the "Resample image" box is checked, as well as the "Constrain Proportions" one. Then at the top of the window change the width to 2000 pixels (the height will change by itself). Then press OK. That's all there is to it.
While we're waiting for Brian, I know he made some recommendations in this thread: https://ask.damiensymonds.net/topic/23973-best-recovery-software-2019/