Can I Cayman Island company use Quickbooks payments to receive payments via ACH?

QB Payment only supports QB US and CA version. If your company is located in Cayman Islands, make sure to open the QB Online Global version for Cayman Islands.

https://quickbooks.grsm.io/North-America

then open a Wise Business account to have a USD bank account. Keep in mind, (for a Caymand Islands based company) you can only receive USD by ACH for free or Wire from inside the US. Then you can utilize the bank feeds to your QBO account.

https://wise.prf.hn/l/64dl92k