On the login page there might be a couple of things you need to check because of which you are facing troubles logging in:
1. You will first to check if you have an SR account. If not then you can create one by going on sr.knowlarity.com
2. The username and password should be correct. If they are not correct then the app will throw an error message.
3. If you have forgotten your password then you can change so by click on the forgot password link.
4. Make sure there is proper internet connection.
Still facing an issue? Get in touch with our support team and they will be happy to help :)