Had to create new user on Mac, now all blank photos

Hopefully someone can answer this for me, I cannot find anything in the forums, or I do not know how to ask it. Totally, totally frustrated.

Due to other computer problems, I had to create a new user in my Mac, 10.13 High Sierra. The other user does not allow me to print to my printer. This user allows printing. So, put my Lightroom catalogue and previews folder into the shared folder. tired to open LR in the new user. Said the file was not available, so I went back and made the folder available  to read and write, but had to go to each file (catalogue and previews to make each individual file read and write. each time I opened LR it told me the catalogue, then the previews still not fixed. no question marks, all looks totally normal except a grey picture space. All my presets are gone, but I f go back to the original user, everything is there, I just cannot print. Apple is working on that issue, advanced tech support, thats have stuck it is, so I cannot go back there.  

Finally it opened, and completely populated all the information form the catalogue, all the way to down to stars, picks, label colors, etc. and to keywords also. even has the histogram for the photo showing. but no images to be seen, only grey squares, still grey if  click on them to make them full screen. I left the computer open all night in case it was an issue of building previews, but nothing.

Now its getting even weirder, if I click on an image in the development module I can see it. click on the next image, I can see it. click on the 3rd image the first one disappears. if an image is visible in the develop module can see it in the library, but if I click on the next image in the library I cannot see it. 

please help, Adobe is not open until Monday, and I have to go to work, so will not get to talk to them until the evening if I am lucky. in the meantime I have a deadline that should have been finished today.

thanks

Joyce

advanced LR user

MacBook Pro, high Sierra, LR classic CC