My current license period is ending and I found a KIS key here but I'm not sure if it's the one I'm already using or a new one purchased recently. I got the message "cannot add activation code as new code" when I tried to add the license code I found. Does it means it's the code I'm already using? TIA, WB::

Welcome. Please try to delete and reactivate your license code xxxxx-xxxxx-xxxxx-xxxxx https://support.kaspersky.com/13829

It’s best to attach the application to My Kaspersky’s Personal Account, then in the Licenses section you can see which activation code is used to activate the application https://support.kaspersky.com/common/buy/14656