My Published APP Stop Working! properly

Some of my data base is not working on my ios version i dont know why
i did not make any changes it was working before the OAuth switch over the same data base is working on android
Also my data list view on one tab is not visible on both Android and ios some other missing components i have not update or change anything because my app is Read only at this time soo…? how could his have happen

Please i need some help here did Thunkable did some backend change that would cause the APP to stop functioning as it should? i change nothing soi dont know what to do