I'm seeing this message everytime I go to register our Product License Key. Anyone else?
Do you connect to the internet through a proxy?
I'm sorry this fell off my radar. No, we do not connect through a proxy. The problem I noticed is that I had a working Key but upgraded my Office Programs and now the key does not work.
Is there anything else I can try?
Have you tried de-register your license and re-activate it on your new Excel version? http://store.seotoolsforexcel.com/activations/
Can you email your email/key to firstname.lastname@example.org and I'll look into it.