Hi,
I can do all the changes in asp.net itself and also we will create admin page for you to handle all the access and permission settings.
We will work on the issue in your existing website
We can also change the design of your website.
SEO also be done for you. We will make sure you will get above 85/100 in SEO
We also provide online chat option integrated for your website for free of cost if needed.
If interested, please provide me with the project details.
Thanks,
Rajesh K