Thanks for contacting us here about this extension.
Unbounces links do not work anymore after using WP meta seo "flush 404s." All the links even on the unbounce website is not working.
Flush feature will remove all URLs not redirected.
In order to have a deeper look at your problem, please drop us a ticket (menu Support > Ticket support).
Our developer in charge will take a look at that.
Is there a way to unflush all the links? I tried to delete and reintall unbounce and completely got rid of WP meta seo. I need to have all links working and functional asap. This is a business process that is hurting us.