Switch to a stage at a specific time?

At the "Received" stage, write down the action "Set the date of execution (completion) of the process" as the current date of the process + 7 days.
Next, at the same stage, you specify the action "Fill in the process or contact field" in which you fill in some additional process field (create for the date) the value of the due date ([orderdateto] variable).
Then, at each of the possible subsequent stages, add the action "Change business process and stage depending on field values" where you specify to switch to the "Closed" stage if the additional field is greater than [cdatetime] (checking that the date in the additional field has become greater than the current one) .