score:2
Since you have started an appeal, I would notify them that you are leaving so that the appeal can be cancelled.
Ask for confirmation in writing which would avoid any problems when leaving.
This refusal will only effect other applications if the polish enter a negative (in the sence of serious) entry into the SIS system.
Reason for Denial : Not submitting original copy of House contract.
I doubt this would be a reason for a negative SIS entry.
Upvote:2
For anyone looking for information about hopeless karta pobytu application in warsaw
https://www.mexicanosenpolonia.com/2019/02/the-struggle-of-applying-for-residence-permit-in-poland/