Doesn't recognize the DJS module as being installed

[cridus]

Hi, I'm trying to use the su -c detach -t command to schedule the detaching, and I decided to use the DJS module, which is the third option.
I've installed it and rebooted the phone, but still, when I use su -c detach -t and input 3 it still acts as if DJS isn't installed.
The specific version of DJS I've installed is v2021.12.14: Merge pull request #13 from n-ce/patch-1 (currently the latest).

Edit: looking at the code, it kinda looks like busybox is needed for this to work. Why would it be, though? DJS can be used without it, if you have root with Magisk. At least, that's what DJS' description says.

Edit # 2: extra problem: I've installed BusyBox to make DJS work, but the scheduling seems to have stopped working after a few days. In the first 2 or 3 days I remember almost never seeing the detached apps in the updates list in the Play Store, but now they're always there.
Where's the file that defines the scheduled task? How can I check why it's not running?