There are community mentions of paid, third-party remote unlocking services, though these are not endorsed by ASUS and carry significant security risks.
Here is the general process to get it done without spending a dime: zenfone 8 bootloader unlock free
If you are a power user who needs root access or wants to extend the life of the phone with a Custom ROM (like LineageOS), it’s a great project. However, due to ASUS’s current server issues, you may have to wait for them to officially resume support or keep a close eye on the XDA ZenFone 8 forums for the latest community-made scripts. There are community mentions of paid, third-party remote
Asus has historically been one of the more developer-friendly manufacturers regarding software modifications. Unlike many competitors who require paid unlock tokens, the Zenfone 8 allows users to unlock the bootloader entirely for free using official tools. Asus has historically been one of the more