Improvement of the functionality of the site dialogs on WP. Only for experienced developers!

There is a site for finding performers, in which customers place their orders, and performers respond to them in the form of dialogues. Depending on the stage of passing the order, each order is assigned a certain status, according to which the indication of this order is set, and the order itself is located in the appropriate section of the site ("orders in progress", "orders completed", "canceled orders", etc. Now this order indication is not finished and slightly violated, and requires adjustment.
There may be other adjustments as you debug.
I am looking for an experienced performer, with a preference for long-term cooperation to further improve the functionality of the site and its support.