Why can't I save changes to my Google Ads tracking scripts?

Hi - trying to setup Google Ads tracking for Shopify store, but the additional scripts that i’ve followed from Shopify (https://help.shopify.com/en/manual/promoting-marketing/analyze-marketing/tracking-adwords-conversions) doesnt allow me to save the changes “Couldnt Update the Settings, try again” - any help please???


{% endif %}

POST - PURCHASE SCRIPT

 
   
  

{% if first_time_accessed %}
 
{% endif %}