This has been an ongoing problem for some members' pictures ever since a software upgrade was implemented about a year ago. Even some of my photos disappeared. It's been a while since anyone's reported this issue and at my tender age of almost 103 (Don't believe me? Check it in my profile.) my memory gets fuzzy and I have to review things. Sit tight and I'll be back atcha shortly on how we might be able to get them back.
Thanks in advance for your patience.
BTW- that's a nice kitty in your avatar. Your kitty drives? I'd be thrilled if I could get mine to just use the toilet instead of the litter box.