We have an app installed Cin7 Omni that is our inventory system speaking to Shopify and in the last month it is now not recognising our Māori macrons that we need to use here in New Zealand.
Here is an example of a product that worked a few months back:
https://tikitibu.co.nz/collections/kuwi-friends/products/kuwi-friends-maori-picture-dictionary
And just recently this has stopped working, in headings and descriptions it replaces the macron (ā) with a question mark (?) an example:
https://tikitibu.co.nz/collections/kuwi-friends/products/maori-activity-book-he-puka-ngohe
It seems there is an error with the way that Shopify is receiving and displaying this data as the correct html data is being sent from cin7 Omni.
How can I solve this issue?