Hi c matthews, sorry I'm not sure but maybe someone on here will know. Shame because they were great photos 
Photobucket has decided that they're no longer going to allow the images hosted on their site to be used or viewed on other websites without a paid account. You can read about it
here. It's a real pain.
If you own the account, though, I think you can log in and save them back to your computer, and then you can upload them somewhere else— Try Imgur or Google Photos, and edit the links in the posts here. It's a bit of a roundabout way to get things back, but given this decision by PhotoBucket, there's not a lot else that can be done, unfortunately.