To add on to this, I'm pretty sure Ly changed their service, I remember seeing a message about it during my last system upgrade and having to enable the new one, though annoyingly it seems they didn't mention it on their release notes, only during the update message.
Anyway, from the wiki
Two steps are reqired to start Ly at boot. First make sure to enable ly@ttyX.service, then disable getty@ttyX.service where X stands for a number from 1 to 6.