Re-linking doesn't work - Images stay blurry, please help!

Hi all, 

please help this troubled analyst:

For some reason when our designer opens a file on her laptop and needs to relink - it does it absolutely fine, we can see the resolution change and this is both when she relinks from the actual file on her computer as well as on CC libraries. 

But when I try to do it on my laptop -  I hit the relink button it doesn’t do anything, no resolution change of the images I am trying to fix. 

Images sizes are same on both laptops and we both used the files from shared Dropbox. 

Thank you so much!