To resolve this issue, follow the steps provided in this article: https://customer.real.com/hc/en-us/articles/204040153
If that doesn't help, provide the following information:
1. Do you receive any error messages during installation? What does it say?
2. What web browser do you use, and which version? (See https://customer.real.com/hc/en-us/articles/207275617)
3.What is the operating system of your computer (Windows XP, Vista, 7, 8, 8.1, 10)?
4. Do you have any security software installed (Norton, McAfee, AVG, etc.)?
The more specific you are, the better I will be able to assist you.