Blockchain wallet generated wrong unsupported xPub

We have an issue with One of our wallets receive xPub key, we generate addresses and clients pay on it. All was good, except one thing, we do not see funds in our wallet. We try to check xPub and receive an error

xPub not found

But this xPub were generated by blockchain.

So what we need to do, in order to receive funds from addresses generated by this invalid xPub?