Has anybody used the Chilkat Crypt2 functions successfully?

I know there are crypt functions for DataFlex but I'm testing various Chilkat functions.

I have the full Chilkat ActiveX library and it is awesome in many ways. One is definitely all the samples written in the DataFlex language. That is really cool.

Anyhow, I tried two different encryption algorithms but both returns an empty string (!).

The two samples I tried are;
https://www.example-code.com/dataflex/chacha20.asp

and;

https://www.example-code.com/dataflex/crypt2_aes.asp

Both encryption functions returns a blank string and I don't understand why? As said I'm not running in demo mode and I have used the "ComUnlockComponent" function in an OnCreate procedure to check that the license info is correct.

Anybody has any input on what might be the culprit?