Hello,
Currently, the program is completely free during the beta testing period. No key or subscription is required. If you are experiencing the same error as shown in the screenshot in the provided link, the issue is likely related to WebView 2.
During the Hand2Note installation, you should be prompted to install all the necessary additional programs. However, if these programs cannot be installed automatically, could you please try to download and install them manually from the following links:
First, download and install .Net 7.0.5:
https://drive.google.com/file/d/1ZA-...usp=drive_link
Then, download and install .Net 8.0.1:
https://drive.google.com/file/d/1b5E...usp=drive_link
Additionally, try installing WebView 2:
https://drive.google.com/file/d/16PO...usp=drive_link
Please note that Hand2Note 4 only works on Windows 10+, older versions of Windows are not supported.