RDS cluster: InvalidVPCNetworkStateFault: DB Subnet

There is hope you can give your “best” price; as being " un-employed " my funds are low but will pay quick and leave 5 stars. Please give your best possible for your bid ? Please note there is hope we can mutually complete this task; we can leave each other nice comments and 5 stars for each? Look at feedback on my profile, feedback I left for many others. Please note project is due in two hours as this projects deadline, as this is needed asap from the time we start. Got a VPC all setup and trying to connect (done this before, have a missing RDS Subnet at some point and not sure if this is default and should always exist or if this is something I can have in my terraform),. Can we do a screen share?