At this time, Palette 2 isn't compatible with AstroPrint and will not connect directly to this software, but Palette 2 will still work with printers that are connected to AstroPrint. In this instance, you would need to manually load the print files to your Palette 2's SD card. We will consider building this compatibility in the future.
If you have a Raspberry Pi with OctoPrint, we'll be releasing the CANVAS Hub plugins. We don't have a plugin for AstroPrint at this time.
If you have any additional questions, please send us a message at firstname.lastname@example.org.