for 403

[Seyed Mani Ashraf Pour Shoshtar]

I was able to purchase the indicator, but when I click on blue tab to install the indicator it doesn't work, here is the screen shot 

[Sergey Golubev]

There are many reasons about this error 403 so I wrote the summary blog post about this error so you can read and check about your reason for that and about what to do -

Summary: Installation Failed - Error 403 and more