I can't see buttons (or other UI elements) when activating license!
This may be caused by altered settings of UI size in Windows. A temporary workaround is to click the license option you want to activate, and then pressing TAB twice and then ENTER to proceed to the next page. This issue is known and will be fixed in newer releases of Corona Renderer.
To prevent this, you can also decrease the size of UI elements in Windows:
1. Right-click anywhere on the desktop and choose "Screen resolution"
2. Click "Make text and other items larger or smaller"
3. Choose "Smaller - 100%"
4. Apply the settings
You will need to close all programs, log off and then log in again for the changes to take effect.