How to edit Footer and sub menus

[Bunting]

 
I'Ve been trying for hours to edit sub menu from footer (about us, contact us, testimonials etc) with no luck !!
everytime I click save what I've been typing (edit block) its said  Success: You have modified block!, but everything comeback from the beginning all over again..
but I'am able to enable/disable block, any clue please

[Basara]

Hello.
To investigate your issue we need more details:
1. What is your AbanteCart version
2. What browser and browser version
3. Did you see issue in other browsers? (Chrome, FireFox)
4. Try to disable adblock or similar blocking plugins

[786mh53-2021]

hi please write the steps how to edit the footer section where it says powered by ....
thanks and regards