Hi,
There is currently an issue on our free hosting servers where all visitors are recognized by the same IP address, which is the server's IP address. Therefore, your website sees different visitors as coming from the same IP address, even though they are not.
This is a problem because it looks like your website has a system that automatically blocks IP addresses. If a user connects with a blocked IP address, your website shows the custom 503 error page. However, because it appears everyone is coming from the same IP address, your script has blocked the server IP, so everyone sees the 503 error page.
Our development team is currently working on a fix for the issue with visitor IP addresses.
Thank you,