License key will not install

Hi, I tried the free version, found it useful so paid to have the watermark go away. Installation was straight forward except when I went to install the license key my Mac gave the message “Do you want to allow this page to open “”?” I clicked Yes and nothing happened. Have tried several times with no luck. macOS Catalina version 10.15.7

OK, forget it. I entered the key manually. Initially that didn’t work but then I found that the organisation name I gave you had a spelling mistake. All good now.