Order Received Page not found

Hi,

I have stated at the bank, this link for a successful payment: https://www.domain.gr/order-received/
However, it redirects me here: https://www.domain.gr/order-received/?StatusFlag=Success&MerchantReference=&HashKey=&Parameters=&ResultCode=0&TransactionId=&SupportReferenceID=&ApprovalCode=&ResponseCode=00&PackageNo=1&AuthStatus=03&ButtonSubmit=Submit

* I have delete the value of some parameters in the above link.

So, instead of seeing the order information page, I get a page with no results.

I saw in another topic that the user had given this as success url: https://www.xxxxxxxxxxx.gr/wc-api/WC_Piraeusbank_Gateway?peiraeus=success

Which one is right?

The page I need help with: [log in to see the link]