Horrible app performance

I never write reviews but this app is so bad that I have to review it. The log in process is so faulty and I constantly get "malformed data encountered". I cant use it and keep reinstalling it.

McDonalds, please ask Starbucks for help with your app. Theyve gotten it right. This isnt rocket science - many corporations are doing this successfully.

BDUBBAU about McDonald's, v5.5.1