Mods Showing As Guest

[ITQalam]

My 2 Moderators 1 Super Mod and 1 Mobile Expert showing as guest since yesterday suddenly
i have tried to restore them but no success try to search them through admin cp but no luck
here is a screen shot for it please guide me how do i resolve this issue

143019

[ForceHSS]

check group titles for them two groups

[blackberry]

Looks like the accounts are deleted.