McDonald's 4+

Need advice for my app/phone. I set my new iPhone as normal, downloaded apps I needed for daily use including the McDonald's app and everything just work fine. Then I decided to restore data from iOS backup. However, after completing this step, the McDonald's app now says "Oops! Something went wrong! DCH-NET-VAL-403-NON" when I wanted to open it. Tried reinstall the app, erase/resetting the phone to the factory state, changing the country and region and even tried restoring it with iTunes but still doesn't work. Asking my friends to try installing the same app on their iPhones of the same model as mine and with the same iOS version, the app worked perfectly. Any ideas why this happened?

I used to love McDonald’s but in 2023 they went a little bit to far they didn’t even celebrate the grimace birthday only in McDonalds egypt and I think other countries but this one is for Egyptians I don’t know about other countries if they have what I will talk about now in there food but let’s start A girl and her mom wanted to eat at McDonald’s then after a day and a half they were immediately rushed to the hospital. People reported on Facebook bones In there sandwiches after that girl and her mom were sick I wamted to order McDonalds 5minuts after I finished I was dying from my tummy even though I didn’t order that much please I recommend to eat at any other restaurant no offense

App is super buggy. Won't let me place orders. I wanted to order for my family and we had to eventually order from somewhere else cus the app wouldn't respond after trying for 20 minutes. It just freezes and refuses to add things to the basket or to checkout.
This has happened multiple times, since the update I haven't been able to use the app for any orders.

The layout of the app is also not user friendly. I wish they could make it easier to navigate by simplifying the layout. I still don't understand the point of the homescreen.
Another issue is that you have to manually change to a breakfast menu but nothing tells you to do that, you're just expected to figure it out.

I've eventually chosen to delete it since its not functional

Really hope the developers fix this app