How to move a license from my old PC to my new one
Hi @Paul_Shirt67,
Thank you for posting on TeamViewer Community.
If your TeamViewer license is activated on TeamViewer client, you may activate the license by input the license key. Please check your TeamViewer version, which device activation was deactivated in 2018.
If your TeamViewer license is activated on your TeamViewer account, you may sign in your licensed account on TeamViewer client for all remote control session.
Hope the explanation would be helpful!
Warm regards,