Integrating APPS with POD Providers Printify

[Faith2Print]

Hi Everyone, I am in process of developing a shopify store for Print on Demand mostly drop shipping, some will be done by me, based in Australia. I plan to sell on different platforms like Ebay Australia, Etsy Australia, Amazon Australia and TikTok.

I am looking at using Printify/OGO/Gelato as drop shipper/supplier though haven't decided.

I have linked my Printify to Shopify already however have seen on Printify website today they only service Ebay US, no mention if same for other marketplaces. Does anyone know if I will be able to successful link Printify, Ebay, Etsy etc?

Has anyone successfully linked any of these POD suppliers with EBAY, ETSY or Amazon etc (Australian versions only). I have paid ced commerce to integrate both Ebay Store and Etsy Store to Shopify. There was no mention of not being able to link. 

What other POD options are there that I can link with Ebay/Etsy/Amazon Australia through Shopify?