1. Clear your browser cache. Clearing the Cache and Cookies in a browser helps to fix issues, which cause errors on a webpage if portal has got any changes of design or functionality. If cache is not cleared, browser will use old data instead of new, what can cause errors. Sometimes you need to cleaned a cache several times in a row, then you must turn on browser and enter to your e-mail.
2. Update your browser to its latest version. Perhaps you are using an outdated browser version which our site no longer technical support. In this connection time, some site functions may become unavailable or not work properly.
! Check if the problem recurs on a different browser.
In case if the above steps have not helped, contact us indicating information as detailed as possible for your actions and the resulting error. Send us screen-shots.