We are currently unable to generate invoices for the past months as this violates the terms of the contract, and we cannot backdate contracts signed on the platform.
However, you can upload a contract with the agreed date signed outside the Oyster platform; we can update the start date for payments.
To do this, please submit a request to Oyster Support and share the contract with the earlier signed date.
Please keep in mind that this is ONLY allowed if you use a contract signed outside of the platform.