Yemek Sepeti Won’t Let Me Delete or Update My Ticket Restaurant Card

I am unable to delete my old Ticket Restaurant Online card details from the payment option in the Yemek Sepeti app. Due to a job change, I have a new Ticket card, but I cannot update the information. I can't reach customer service, as they keep redirecting me to pre-set services. When I contact the Help Center, they only provide generic instructions like clicking on specific menu tabs, without offering any real solution. Even after trying multiple times on different devices, the issue remains unresolved. As a result, I cannot use my new Ticket card at many restaurants that accept it. Despite being one of the apps I use most frequently, its lack of functionality is incredibly frustrating.