They have until tomorrow, at midnight PST. If they don’t find another host, Parler will go dark, and probably for a week or more. They can’t move to a new host as quickly as would be needed to avoid interruption of service.
Here is the statement from the Parler CEO:
I agree that this appears to be a coordinated attempt to shut down free speech. I wonder if at least some of our do-nothing Congressmen and Senators are now regretting failing to act. Unfortunately, it is now too late.