I propose to address the issues and implement changes in your C# MVC web application swiftly and effectively. Enhancements include detailed error handling, renaming Account Type, single account login enforcement, fixing frozen components, enhancing email configuration, clickable rows, checkbox color modification, password box ordering, and code debugging enablement. Leveraging my expertise in .NET, C#, MVC, ASP.NET, and Microsoft SQL Server, I assure timely resolution within your budget of $200. Payment will be made upon successful completion. I'm keen on future collaborations for Version 2.