This Agreement may be changed at any time, in connection with which the User is obligated to check the weekly relevance of the text of this Agreement and carefully read all changes published by the Service Administration. The Service Administration will take all necessary measures to notify Users in advance of a change in the text of this Agreement, in particular by sending informational messages to the email addresses provided during registration. Nevertheless, the obligation of the User to regularly review this Agreement is a priority, and the User cannot make a claim to the Service Administration about his disagreement with the changes on the grounds of non-receipt of the corresponding notification.