there are 3 license type in version 2.0
"active" method in old version renamed to "activeProfessional"
please check spelling for your paramaters, It case sensetive.
and ensure that you have no extra blanks in your paramaters.
i think you had some misunderstood about license.
the demo project can only actived with package name "com.radaee.reader"
it is application package name.
if you change license in demo project, the watermark will be displayed.
to remove watermark:
you should create your application with package name you requested.
the license you purchased must bind to package name you requested.
active function first check <package name>, <company name>, <mail>, <serials>.
then access "data/data/<package name>".