Hello Jongwon,
Currently, AWS is the only hosting offered for P21 Community installer files.
Sorry for the inconvenience!
A major part of Community app resources also uses AWS to get updates.
Therefore with blocked AWS services, your app installation would quickly become outdated.
We recommend setting firewall exceptions for AWS addresses used by our app.
Please reach us on Community support email (community@pinnacle21.com) if you would like us to send you the list of these URLs.
Thanks,
Philipp