How do I correct my IPad Pro Smart Keyboard “accessory not available” error?

How do I correct my IPad Pro 2nd Generation Smart Keyboard “accessory not available” error? The keyboard unfortunately connects to the IPad intermittently. I have cleaned the contacts, rebooted, tried to straighten/reshape the “connection bar” that contains the contacts. Is there a permanent fix, or is the connection between the keyboard and IPad terminally fatigued after significant use?