I was scammed by this website before selling on shopify. They stolen almost USD 9,000 on my seller account and has been reported them to the international police.
I just found this website also linked on shopify, and there is many shopify seller made a bad reviews with the same stories. Please see the link here https://apps.shopify.com/wish
I think shopify must take a very serious actions to this company.
This is Max from the Shopify Team.
I'm sorry to hear that you've had a difficult experience working with this company.
If you were using the app listed in our App store, please send an email from the email associated with your account to firstname.lastname@example.org. Let us know some more details about what has gone on so we can have our team review the specifics.
Otherwise, dealing directly with the company and service/payment provider that enabled this would be the next best step.
I hope that helps point you in the right direction.