A client portal is not a mini back office
A client does not need to see every internal screen. They need to know where the order stands, which invoices are open, which documents are available, and how to pay if a balance remains.
The simpler the portal is, the more useful it becomes. The right information is the dossier status, printable invoices, available workshop documents, and real payment actions.
The right benchmark
If the client can understand the next action in a few seconds, the portal is doing its job.