# BTC eBill — user reviews > 1 indexed App Store user reviews of BTC eBill by Brantley Telephone Co., Inc., rated 1.00/5 from 2 ratings. - Source: https://appshunter.io/ios/app/btc-ebill/id6446292251/reviews - App overview in markdown: https://appshunter.io/ios/app/btc-ebill/id6446292251.md ## Most critical reviews (1 lowest-rated) ### 1/5 — Doesn’t work *2026-03-06* The app isn’t working n hasn’t been working for over a month n half now. When I click it, it says (g_ParamName_Name, pattern at System.ComponentModel.DataAnnotations.CustomValidationAttribute.IsValid(Object , ValidationContext ) at System.ComponentModel.DataAnnotations.ValidationAttribute.GetValidationResult(Object , ValidationContext ) at System.ComponentModel.DataAnnotations.Validator.TryValidate(Object , ValidationContext , ValidationAttribute , ValidationError& ) at System.ComponentModel.DataAnnotations.Validator.GetValidationErrors(Object , ValidationContext , IEnumerable`1 , Boolean ) at System.ComponentModel.DataAnnotations.Validator.TryValidateProperty(Object , ValidationContext , ICollection`1 ) at CommunityToolkit.Mvvm.ComponentModel.ObservableValidator.ValidateProperty(Object value, String propertyName) at CommunityToolkit.Mvvm.ComponentModel.__Internals.__ObservableValidatorHelper.ValidateProperty(ObservableValidator , Object , String ) at CommunityToolkit.Mvvm.ComponentModel.__Internals.__ObservableValidatorExtensions.g__ValidateAllProperties|6_0(Object obj) at CommunityToolkit.Mvvm.ComponentModel.ObservableValidator.ValidateAllProperties() at ComponentLib.ViewModel.ViewModelBase.ValidateProperties() at ComponentLib.ViewModelComponent`1.d__4[[eBill.ViewModels.Login.LoginViewModel, eBill.ViewModels, Version=26.1.4.0, Culture=neutral, PublicKeyToken=null]].MoveNext() at Microsoft.AspNetCore.Components.ComponentBase.CallStateHasChangedOnAsyncCompletion(Task task) at Microsoft.AspNetCore.Components.ComponentBase.RunInitAndSetParametersAsync() at Microsoft.AspNetCore.Components.RenderTree.Renderer.GetErrorHandledTask(Task , ComponentState ) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-05.*