Mailchimp not syncing new customers

[Hadieda]

I use Square to take payments online only on hadieda.co.uk and this is synced with Mailchimp (Free) account currently.
I can see that Mailchimp is syncing, in the Square by Mailchimp integration but in the logs I see ITEM skipped with the reason of:

Order does not specify an associated customer and can not be created or updated at Mailchimp.

Sync TaskIDReference IDCustomer IDOrder Date

Order

ltmt-------------

14-----91

No customer specified on order.

Aug 24 2025 05:05PM +00:00

Now, this means that I am NOT getting my most recent clients automatically syncing into Mailchimp and thus I wont be buying a premium package to do automation as Automation only works with good data.

Has any had a similar issue or any tips on actually getting square to reliably sync with Mailchimp and getting automation done?

Square Marketing is useless and overpriced for its funcionality so I am not even look at that anymore.

Some things to note:
- I have redone the sync - both accounts are the correct accounts and I am syncing my primary square account/database. 
- In mailchimp its showing new contacts/updates contacts from the last month but NONE are the new orders I got from Square, the emails and contact details do no exist in Mailchimp
- Yes, this is a mailchimp managed thing, but I have a sneaky suspicion that this is a Square problem and NOT a mailchimp one

[Hadieda]

Solved - 

This system is SOOOO idiotic and it changes functionality without informing users it seems.

I did NOT have Instant Profile turned on (it was on previously...... and syncing previously in Square itself) and thus when an order was created it did not create a profile for the customer in square itself, hence the errors in Mailchimp's Sync.

So, if you have this issue then just go into Square Dashboard -> Customer Directory -> Settings -> Instant Profiles and turn that on.

If Square would just up their game in terms of UX and customer comms most of these issues would not need to be listed here.....

PS: I knew it wasnt a mailchimp issue!

[ReturnToEase]

Hi there, I am not seeing instant profiles as an option anywhere. do you have any other recommendations for how to access or fix this? thank you