With a robust team of highly skilled professionals, including myself, with over 150+ successful project experiences in your requested domains, we are more than equipped to tackle this task. I, having worked extensively with C#, C++, and .NET throughout my career, has granted me an in-depth understanding of the codebase we will be working with. This understanding is vital as it allows us to practically and efficiently navigate any issue or bugs that might arise while integrating ASP.NET identity for secure user authentication.
Furthermore, our experience developing and troubleshooting web applications will be significant here. Troubleshooting is an inherent part of every project, and we've become quite the problem solvers; it's what sets us apart. Coincidentally, your project ticks all the essential boxes required for us to flex those muscles: diagnose complex issues and implement swift solutions.
Finally, our pitch wouldn't be complete without mentioning that post-delivery assistance and extended support are part of our quality service package. We believe that getting the job done correctly is as important as offering support afterward, ensuring a seamless transition without any hitches. Ultimately, I assure you of a timely resolution to your login, registration, and authorization issues, making your application robust and secured once again.