I will do some further investigating and report back.
Hey @nicolama
Just to add in here: I would recommend double checking the syntax for your initial attempt + follow the guidance on our developer portal. It could be something as simple as a syntax and formatting error since your original post does have the profile parameter included.
Hi @alex.hong - thanks for your answers.
I finally found the issue, I just had to switch the settings of the list to “single opt-in” and it worked perfectly.