MainWP Dashboard Version 4.1.11
I noticed that when I have an non-activated extension on the MainWP Extensions page and hover over the grey locked padlock icon the following tooltip is displayed: “Excentino API license is not activated.” Once the API key is entered the tooltip on the green unlocked padlock icon shows a message with the expected spelling: “Extension API license is activated properly.”.
The appears to be a bug, unless the odd spelling on the non active extensions is intentional.