On any of these alternative social media sites, be patient. Most are getting overwhelmed by a big surge in new users and that will take a few days for the site admins to scale up for the new user loads.
Think of FR on some election nights. PredictIt was out for about an hour both in 2016 and 2020 on election night. Capacity costs money and you don’t want to pay for that all year round. Even back-end frameworks that have “elastic” self-sizing features can be slow to adjust. It’s not instant.