Why is the redirect not working on my site?

Question

PHP

Wrote the site smorch.idhost.kz. There, in the main page after authorizations, header("Location: ./"); should have been earned. and the same page should open. But it does not work on hosting. On the local server, Denver, it works fine. During authorizations, the site must connect to the database. Maybe this is the whole point, I just don’t understand, before, if I remember correctly, I worked. For authorizations, you can use these data: group: 9, password: 9. Registration does not work in the same way.

Answer 1

It seems in header("Location: ./"); extra point
try
header("Location: /");
which would translate to the root of the site, but
header("Location: smorch.idhost.kz");

Answer 2

Ask the host

Answer 3

Maybe you are outputting data to html before this header is sent?