Hi akychan036,
Welcome to the Sony Community!
We recommend contacting your local Sony support team for better assistance with your concern about your SEN account and Camera apps download. You can contact the Sony offices/Sony representative offices nearest to your place of residence in Asia Pacific region through http://www.sony-asia.com/countryselector.html?hpid=countryselector:AsiaPacific. Due to proximity, they are in a better position to respond to your questions or concerns.
If my post answers your question, please mark it as "Accept as Solution". Thanks_Mitch