Cannot login to WordPress Dashboard


Staff member
Some strangeness here.
So I have build a custom theme for a client about a year ago and all has worked perfectly till about 3 days ago when I noticed that I could not login to the website. I kept and still keep getting the '<strong>ERROR</strong>: Cookies are blocked' warning on the website.

At the time my client still had access but now he no longer has access and is just getting the same warning!

I had the Cerber plugin running on the site and I had a custom login url namely also when both of us tried to goto it redirected us to the 404 page as it should. I went about to use the fix Cerber provides called WP Cerber Reset provided on its website <a href="" rel="nofollow noreferrer">quickhelp</a> page.

This changed the login link to the default /wp-login.php and I tried again and I still got the '<strong>ERROR</strong>: Cookies are blocked' warning! I tried again on 4 different machines and on three different browsers namely FF, Chrome and Edge. Weirdly when I tried to goto the /wp-admin/ it redirected me back to the login page with this link:
<a href=";reauth=1" rel="nofollow noreferrer">;reauth=1</a>

I then google searched a fix for the ERROR cookies a blocked warning and found this <a href="" rel="nofollow noreferrer">fix</a>. Which I implemented on my functions.php file again I am still getting the Same error and both my client and I are still getting the same issues.

I have checked the .htaccess file and that looks perfectly fine with just the default WordPress code within it.

I put in a support ticket to my hosting company explaining all of this and after close to 16 hours I get this reply...

I have spent a while trying a number of different things to resolve
this however I havn't been successful in logging into the WordPress
admin section. I have tried disabled all plugins for the site which
hasn't resolved this problem and most of the suggestion on WordPress

I would recommend changing to one of the default WordPress themes and
then try logging into the wp-admin section, as it's the only other
option I can think of.

How do I go about changing to a default WordPress theme when I cannot even login is my main question?. Also I have re-uploaded a fresh new copy of WordPress to the site via ftp and again this has made zero difference.

Many thanks and any suggestions are greatly appreciated.
Phillip Dews