Issue with License Activation after Theme Update

Hi there dear Team, I have bought Photofocus Pro on March 31, 2021 and I love it. A few days ago I updated to PhotoFocus Pro Version: 5.1.5 which worked smart and simple (although NOT automatically). After the update the theme now requres the license key again: "Theme needs activation. Go here to enter license key and activate the theme." Entering what I found in my account here on your website did not work - I received an error "License keys do not match." I'm quite confused now - as far as I understand the license ist not expiring before March 31, 2022, and I understand that updates are included. Is there a different license key necessary for upgrade? Is there any opportunity to activate automatic upgrades for this theme? What did I wrong in case? Thank you very much in advance for your quick and informative reply. Best regards Winfried