You may as well write a message to the Customer Support agents. The Online Chat and Feedback options are at the bottom of the page.
Mailing address: Panda Investments (UK) LTD, 707 High Road, London TTN GmbH, 7A Tuchlauben, Vienna, 1010, Austria
During conversation the Customer Support agent may ask you for the “Unique user session identifier.” It is always at the bottom of the page:
This number is needed to define certain technical parameters for your session on the site. It is unique for each session; that's why before contacting the the Customer Support, you are recommended to save it or not to close the page.