Not triggering: Mailchimp New Subscriber in Segment

Dear Zapier Community

I hope you are all well :)

You guessed it, I am having trouble with my Zap!

This zap works perfectly when I go through the tests. However when I publish the zap it does not trigger. When I look in ‘zap runs’ there are no runs or errors. I’m not quite sure what ‘15 min polling trigger’ means but maybe this could be the issue? 

I have attached screenshots of each step in the Zapier flow, showing both the input and output data. I apologise if it’s overkill! 

Automation Workflow:

1. Tag Detection in Mailchimp:

   • When a subscriber is tagged with "Ambassador" in Mailchimp, initiate the zap flow.

2. Promo Code Generation:

   • A unique promo code for the subscriber is created by reformatting their name and bday. The code will be based on their name and birthday (i.e. Skye 15/02 → sky1502)

3. Integration with Lightspeed X:

   • The generated promo code is then posted to Lightspeed X, which is my inventory management and point of sale (POS) software, to create the promotion in the system (5% off any item) based on the promo code created in the zap flow.

4. Subscriber Tagging:

   • Finally, add a new tag to the subscriber in Mailchimp using the generated promo code. This allows for easy tracking and future reference.

In a bit more detail, here is the Zap Workflow:

1. Trigger - New Subscriber Tagged as "Ambassador":

   • The automation is triggered when a subscriber is tagged with "Ambassador" in Mailchimp.

2. Extract and Process Subscriber Name:

   • The subscriber's name is truncated to the first three letters. For example, "Skye" becomes "Sky."
   • The truncated name is then converted to lowercase, turning "Sky" into "sky."

3. Process Subscriber Birthday:

   • The subscriber's birthday (in the format "DD/MM") has the slash removed. For example, "15/02" becomes "1502."

4. Reformat Current Date:

   • The current date is reformatted to meet the requirements of Lightspeed X’s API. This ensures compatibility when sending data.

5. Tag Subscriber with Promo Code in Mailchimp:

   • In Mailchimp, the subscriber is then tagged with a new tag that combines their truncated name and reformatted birthday, such as "sky1502."

6. Post Promo Code to Lightspeed X:

   • The final step involves posting this promo code (e.g., "sky1502") to Lightspeed X via a webhook by Zapier. This creates the promo code in the Lightspeed X system.

If anyone has any ideas I would hugely appreciate some help. 

Thank you so much <3

Please see below for the zap;