You may have received an email from Plooto to approve payments. However, when you go in there is nothing to approve.
The reason for this is you may have more signers on the account that have already approved the payments. Once they review and approve the payments, the payments are on their way. You can still see the payments that were sent by going to the "PENDING" , OR "PAYABLES" tab within Plooto.
It is the same idea as if I put a cheque on the desk and asked all the signers to review and sign the cheque. Once the cheque is signed by the first two signers, the cheque is packaged up and mailed off. Anyone coming by later will not need to sign the cheque.