A client paid me using their credit card through PayPal, and the payment showed up fine against their invoice in ZOHO, just like normal. 

But two days later, I am in ZOHO and their payment is gone - the funds were sitting in Undeposited Funds in my account and now they're not and the invoice is marked as still unpaid. 

I reviewed my PayPal account and it says the money is there.

Any ideas? I know I can fix this manually, but I am concerned that the payment may pop up again in the system later and cause problems.

Thanks

petra