You cant. They just shut down the server and removed the unlocker app from their site. Maybe, just maybe, they will release a “rewritten version” in the coming months according to some guy on xda who asked them.
This shit is the last asus product Im buying for a loong time if ever.
The Poco X5 Pro also has an audio jack and custom ROMs, phones without ROMs are unusable tbh.
Nevähööd of such phone tbh