I invited my friend to sign up on Rebrickable today and she was excited to view my collection. We both turned the LEGO collection privacy settings to yes, but viewing each others profile there was no link to view the LEGO sets. I changed the URL from this: https://rebrickable.com/users/JeanetteMC/ to this: https://rebrickable.com/users/JeanetteMC/setlists/ adding the /setlists after the username and I was able to see all of her sets. Then I clicked on "Set List (36 Sets)" in the left side set list box and the URL changed, adding a search box and add set button. This time the URL is ending in /369866 https://rebrickable.com/users/JeanetteMC/setlists/369866/ While logged into my account I was able to add sets to her account but I couldn't remove it from her account. The Error 404: error flashed in the top right corner of my screen but when I reloaded the page there it was on her account. She could see it at home and could remove it and then I added set 4559 so we can help find out why this is able to happen.