I have imported subscribers several times before not advanced import add-on successfully. This time I don’t know where the same function on The Newsletter Plugin so I tried to use Advanced Import addon but it doesn’t work.
I used simply below sample from the guide and data I exported from current subscribers, neither of those no working.
Email;Last name;First name;City
test@example.com;Test;Example;Roma
I did import both via file and copy & paste ways.
I am a paid customer and created a ticket to help but no answer yet after more than 24 hours.