Presta Expert needed !!

Job Description:

i have a prestashop cloud store and cant manage the modules, have a error 500..also cant access the right config file (or don't know to access it properly)... second point, i need a payment module installed and configured and third, i need the green letters in the footer (my account etc. to be white)... and fourth, i'd like a background pattern, a very very soft one...ideal plugin i can provide but the configuration/API i don't know..

Aptitudini: Prestashop

ID Proiect: #9141276