How can I know that my profile is approved?

[#1]

You will get a notification via email! simple 

[#2]

Hi Maha,

Just to confirm that your application haven't been submitted for a review, if you`re ready please go to the bottom of the page and click on Review Application.
If you`re directed back to the same page please try clearing your cache and cookies or logging in with another browser. Thank you.

[#3]

Oh thank you, I thought that I had!