As stated in the news message it will require an all world maintenance to overwrite the housing management server with the results from the lottery server, which has not been announced yet.
Please wait until the all world maintenance has been completed. This information is in the news announcement.

Whether you take your gil or not, it will not effect the results if you have won the lottery. If you have won the lottery on a plot, you will be awarded it.
The way to collect and resolve the gil collection issues will be announced once a method has been decided.
Please keep the gil on hand and do not spend it, you will need it to complete the purchase.

https://na.finalfantasyxiv.com/lodes...7fcff58ee4f9c5