We only accept Visa, Mastercard and JCB Credit Card payments for now.
Our server is deployed with the latest RSA - an asymmetric encryption algorithm for all data including your message contents, stored within our servers. This assures that not only your identity stays anonymous but also your message content is also well protected.
The top-up is usually instantaneous. If you do not see the credits, please try to restart your app and it should reflect accordingly.
Our app currently is only available in Japan and we are working on deploying the app intentionally.