Arturo O., can you please check this table (step 5): https://app.clay.com/workspaces/73195/tables/t_SBwWI4VrXbd8/views/gv_l8oIgkUqbHF8
Leads are not being added again, but this time, the are no inside Smartlead. and all of the old reason's don't apply.
It would certainly be nice if Smartlead returned a way for us to know the reason why a lead can't be added.