Use this wallet to withdraw ARDR from exchanges:
https://nxtforum.org/nrs-releases/nrs-v1-11-5/

You have three options:

1) sync from scratch, can take a few hours;

2) download the latest ready blockchain files from peerexplorer.com (bottom of page link);

3) Activate Lite mode:

3a) Unpack Nxt client if you use the zip link or install if you use the installer.

3b) Locate directory nxt/conf.

On Windows it is here: C:\Users\AppData\Roaming\NXT\conf

Mac: ~/.nxt/conf

Linux: /conf folder under the root installation

3c) Create a text file nxt.properties in this directory with a single line:

nxt.isLightClient=true

start the Nxt client and it will not be downloading the blockchain.



Once you have withdrawn ARDR to your account, wait for Ardor launch in 2-3 months.