Our website hosting service started getting a lot of bot traffic recently, and we implemented a strict ip firewall. If your IP sends a lot of 404 errors in a short amount of time (for example if your site has a lot of missing images and you refresh a lot while testing) or if you open multiple bss.design websites that each generate 404 errors, your ip will be blocked for 24 hours.
For normal website visitors this shouldn’t be a problem since we’ve set the limits quite high. But for developers who publish multiple sites and refresh a lot, they may trigger the firewall block. My advice would be to check your websites for 404 errors and eliminate them.