6.1. You can delete cookies already stored on your computer; for example:
6.1.1. in Internet Explorer (version 11), you must manually delete cookie files (you can find instructions for doing so at http://windows.microsoft.com/en-gb/internet-explorer/delete-manage-cookies#ie=ie-11);
6.1.2. in Firefox (version 47), you can delete cookies by clicking "Tools", "Options" and "Privacy", then selecting "Use custom settings for history" from the drop-down menu, clicking "Show Cookies", and then clicking "Remove All Cookies". You can find instructions for doing so at: https://support.mozilla.org/en-US/kb/delete-cookies-remove-info-websites-stored
6.1.3. in Chrome (version 52), you can delete all cookies by accessing the "Customise and control" menu, and clicking "Settings", "Show advanced settings" and "Clear browsing data", and then selecting "Cookies and other site and plug-in data" before clicking "Clear browsing data". You can find instructions for doing so at: https://support.google.com/accounts/answer/32050?co=GENIE.Platform%3DDesktop&hl=en
6.1.4. in Opera you can delete all cookies by clicking "Settings", "Show advanced settings", "Preferences", “Advanced”, “Cookies”, and check "Delete new cookies when exiting Opera". You can find instructions for doing so at: http://www.opera.com/help/tutorials/security/privacy/
6.2. Deleting cookies will have negative impact on usability of our website