Arduino mega with 3.2" lcd display, fix of ui and bugs

The Original code (the code is a mess) had disappearing buttons in the ui, that made the buttons disappeare when occupied, after a set time they should return (they currently stay gone). I need them to return again as before.

Also i need less buttons in some places and more in other.

In short need someone to assist me with a few adjustments, the returning buttons being the most complex of them.

Don't ask my budget, just give me a price you are able to do this for.