McDonald’s app not working

Thank you for posting here in Apple Support Communities, Sunsplish.

We understand that you haven't been able to use a specific app on both your iPhone and your iPad, and we'd be happy to get you going in the right direction. Since you've already performed the troubleshooting steps found within the resource below, working with the app's developers would be the best route to take towards a resolution: If an app unexpectedly quits, stops responding, or won’t open

However, the community would still like to offer our support as well. To start, can you check to see if there are any profiles installed on either your iPhone and/or iPad. This can be done by going through Settings > General > Profiles or Profiles & Device Management.

Next, let's ensure that the date and time settings for your devices are set up correctly by going into Settings > General > Date & Time.

You should also try to test the app by using alternate internet connections, such as another Wi-Fi network or even through cellular data.

We hope this helps.

Cheers!

That error message is coming from McDonald's server, it has nothing to do with your iPhone. If you ask for a supervisor enough times with McDonalds support they will reset your account and all will be well again. At the first level they don't have a clue and if you had a Samsung phone they would tell you it is your Samsung phone, if an LG, ditto. I think it comes up on their screen.

I have an iphone Xr and have the same problem for the last 4 months. McDonalds tech support and Apple Tech support couldn't fix it.

Well, McDonald’s tech support are the only ones who have any chance of fixing it. I’ve seen a lot of posts about problems with the McDonald’s app recently.