I cant activate my 3rd computer

I have two computer using my license, but when I try to activate the third computer it does not let me do it. whay can I do? I know I can use my license in 3 computers at once. Please advise.

JF

have you checked your license manager portal to determine if there’s a stale entry?

Deactivate one old PC in license portal first, then activate the third one.

Best to contact support @ support@lightburnsoftware.com