If a user has multiple accounts, a site administrator can merge them into one. All player data and history will be retained.

To merge accounts, go to Admin > Community > People and locate the Merge button near the top:

Next, search for the two accounts that you wish to combine:

Note: this action cannot be undone. 

If you are a user and wish to have your accounts merged, please contact the admin of your local site, or file a ticket with TopScore technical support.