So I am only viewing other files shared to me by other people. On my laptop everything is fine, on the PC it says its full/out of space. What is the difference here? I do not upload anything at all, I am just looking lol. Thanks!
If someone has shared a folder with you, it would take up space in your account as well. Because every member can add to and modify the contents, it counts toward storage quotas in each member's account.
As a first step, can you check your account's space here, and let me know more?
Another thing I would check if I were you would be the account linked on each app. You can find this, by clicking the small Dropboxicon (next on your WiFi) then avatar or initials, then Preferences. Under the Account tab, you should find that info.