Wrong DNS Whois information

My domain named, purchased through forumotion, has the wrong info in the technical area of the whois information. The person who helped originally set it up has his information there, but he has not been involved in the site in nearly 10 years. My email is the founder email. How do I make the change to the domain information to update the tech contact?

Hello @Txsoccer,

Please send me a PM with the following informations (for each one, please provide me the current value and new one):

• Foundation email:
  
• Name
  
• Firstname
  
• Address
  
• Post code
  
• City
  
• Country
  
• Phone
  
• Email

Regards,
Shadow,

PM sent