Facing issue while consume Free OCR API in C# Application

Dear Team,
I want to use Free OCR API in my C# based application. But ,I am getting unable to connect due to below issue getting. Please, help me out in this as soon as possible.

Error :point_down:t2:

A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 149.28.36.7:443

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Net.Sockets.SocketException: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 149.28.36.7:443

Thank You
Sneha

If you test the connection with Postman, do you get the same result?

You probably know it, but just in case: Postman is a free Chrome app, see Free OCR API

If you see the problem even with Postman, a screenshot of the result could be helpful.