The terms contained in this document are defined here.
Discord.js, the library used by the Developer to develop the Bot, stores all the data it can access under "caches". Caches are destryoed and recreated on reboot.
Some data we need is sent to us through Discord messages. Those reside on the Discord servers and are hard, if not impossible, for us to completely erase. The data contains:
To request deletion of data, you may contact us in this server.
Some data isn't deleted because it would lead to exploitation (for example, blacklists)