There is nothing destructive about robust criticism.
You can use the built in updater that you can find under settings/system/updater or you can download the ROM and update by booting to the recovery. There is a link to download in the OP.
I've tried messaging the devs but they haven't responded to my email. Sent them a direct message on xda since it shows they're not completely inactive and are at least responding a few times per week to comments. Hopefully they see my message.
*** Disclaimer I am not responsible for any damage you made to your device You have been warned