I've been experiencing a weird "bug" in my website which I have a form in the front page to do the log in, it doesn't log, redirects me to the WP-login.php and it says the Cookies may not be active in my browser.
I've checked my browser and the cookies are active.
After log in (on the WP-login page) it never happens again. But after cleaning my cache and testing again, it does the problem.
How do I fix this?