I purchased the premium options as I believe is worth it. However I have to say it was a bit confusing how to redeem the license, if you go to the settings of the extension through the extension icon on the bar you won't be able to redeem it, as the license field there is just to displayed it, you have to make display the extension on the left side of the browser and then from there redeem it in the settings of the app. Because was so confusing the process I give them only 4 starts.