I am trying to import a CSV file into my mailing list - however even though I have very carefully checked the original file and it is clearly in three columns - email, first name, last name, many of the last names are showing as doubled. that is marysmith@gmail.com Mary Smith Smith
It seems that the error is created when there is an email which has either numbers in it or an underscore .. eg mary_smith@gmail.com or marysmith14@gmail.com.I have imported the same list into MailChimp with no problem and no errors seen.I have been in touch with Squarespace help but without any luck so far. If anyone has any solution to this or has experienced similar please let me know.