Timed out waiting for Protractor to synchronize with the page after 11 seconds - Protractor

I have a login form, and I want to set input to both inputs, but only the first one is set.

Actually: only one action is executed, others are never executed. If I put btn.click() on top, no input is filled. What am I missing?

Error:

Uncaught exception: Timed out waiting for Protractor to synchronize with the page after 11 seconds. Please see http://ift.tt/OLBPn9

This is my test:

describe('ADM login page', function () {
        beforeEach(function () {
                browser.get('http://ift.tt/1ceQmo7');
        });

        it('login', function () {
                var username = element(by.css('div.e2e-adm-username-input input.Input-Holder')),
                        password = element(by.css('div.e2e-adm-password-input input.Input-Holder'));

                username.sendKeys('test');
                expect(username.getText()).toBe('test');

                password.click();

                password.sendKeys(',,test');
                expect(password.getText()).toBe(',,test');

                element(by.css('div.Login-ActionHolder a.Big-Action')).click();
        });
});