Category disappeared from back-office but still shows up in front-office

[Serop56]

Dear all,

I'm facing a strange problem, one of the categories in my shop disappeared from the categoies list in the back-office.

However, when i load my shop online it appears with all its subcategories normally.

 

I can't find it in the back-office, i have tried the search and looked at different moudles but no luck. Im new in prestashop and i love it. Please help me fix this issue.

 

my shop url is: http://www.dt-uae.com

I have attached a snapshot of the problem i'm facing