First – To login normally need twice or more to click and click again.
Second – After login successfull, if the user click on my Logo to initial page the site make users logoff. And if the user clicks in some product, works, but again, if he clicks on initial page, user logoff again.
In this case, you need to create a staging development copy of your website. There, you will be able to do such kind of experiments without any harm to your production website.