Oh yeah, that definitely should be the case why it is not working for me, I am using the GitHub version which is 2.1.1...
But I think now I'm confused did you actually manage to get rid of the Sync ads blocks?
Or you have the block with the "empty" ads?
In the Lsposed app within the MinMinGuard section you have selected Sync for Lemmy there too or only within the MinMinGuard settings?
I am a bit lost in your third point, maybe can I see some screenshots?