I then followed the steps to the second article using Zapier. I used the Zap Template that was provided and made the necessary tweaks to point to the Customer Fields registration page. I ended up getting the email to subscribe but in Klaviyo my account was showing never subscribed. Even when I deleted my account and tried again. I again received the email to subscribe and clicked the button. When I went back to my account it again said never subscribed.
The client that I am working with doesn't want to use Zapier if I can help it. Right now using Zapier I am halfway there and would like to get this working ASAP as the site needs to go live in three weeks. I would prefer to not take the three weeks I have getting it working and instead use that time to test the site further and make sure that all is working properly. Any help on this will be greatly appreciated.