So i have problem that i can't login in. Eariler i couldn't logout, but then after couple of days it logged me out automatically, but now i can't log in.

I tried to make new account for testing and with that, well, same thing happens... :(

Witth registaration i have not problems. This happended after i edited main_header.html and main_footer.html AND installed avatar_plugin whic i removed later :(

If u say that this is asked before, i don't think so, coz didn't any topics!!!

Check your cookie settings. I'm 90% sure the problem is there.

If you can't solve the problem yourself - welcome to our paid support. We're providing only paid support on custom tasks.

yeah, but just tell me how to "re-add" cookies of something if thats help`?

you can try to change the name of the cookie to something else in setup_options.php

Study our manual, locating "cookie". It will show all setting regarding the cookies.

I know our default settings work in most cases, but often see users are setting cookies, like they would be teach by the devil. So fixing other's mistakes is also our custom job.