Sometime during a recent HOS firmware and Atmosphere update, ACNH cheats stopped working for me.
This tip from this thread got them working for me again: "If you use SaltyNX, you need to add X01006F8002326000 to exceptions.txt in SaltySD."...
Can't seem to edit my original comment. I fixed it by downgrading to 2.0.6, using a 100% save I found online for 2.0.6, installing the bcat files, upgrading to 3.0.3 on the same save, updated the save data, and then imported my old save back. Now...