Back in 2016 I bought a license for personal use which I used to great satisfaction. Now after several years I reinstalled the software and for some reason the software doesn't accept my activation key. Although I can type the key in the input field. I get no message or whatsoever that the key was accepted. However, when I want to export a timelapse project in Full HD resolution (MPEG-4) the software states that this is not allowed with my current license. The exported video also displays a watermark 'timelapse tool'.
How do I fix this?