Using Firefox as browser-Ran as Admin ( NOTE-activation will NOT allow me to copy and paste-HAD to MANUALLY TYPE IN Activation Serial #’s ,hoping that all zeroes ARE Zeroes-(they were, activation successful,pulled up in Win10 64-bit from ‘All Apps’…might want to notify Devs of this minor annoyance,and in the future,you might want to denote all Zeroes with slashes thru them to eliminate ANY chance of confusion , as is/was common practice.Just my 2 cents worth…. ) Have not actually used Compressor function yet,will report back if any issues- Lifetime price is $39.99 ,BTW .