Why Can't I Add Another Income Source?

Each plan has a limit on how many active income sources you can track at once — Standard supports up to 3. You can still add a source past that limit — Flux just adds it as inactive rather than blocking you from creating it.

To make the new source active, deactivate one of your existing active sources first (three-dot menu → Mark Inactive), which frees up a slot, then activate the new one. Nothing is lost by deactivating a source — its history stays intact.