Just for your information, since you have access to your php files, that means you are self-hosted using the software from wordpress.org. We here on wordpress.com do not have access to the underlying files and will not be able to help you with your self-hosted install. You need to ask over at http://wordpress.org/support/ .
My question is quite the opposite: how do I insert admin login button (or even the simple login button)? I am using the Connections template, by Patricia Müller. Could that be the reason? Is there a way around it? Thanks in advance.
Is this your blog? If you go to Dashboard > Presentation > Widgets you can drag the meta widget into your sidebar; if you click site admin that should take you to your dashboard, if that’s what you want?
You’re welcome. Glad to see it’s working! :) If you want to, you can link your username here to your blog by going to the top of this page, clicking View Your Profile, Edit and putting your blog address in the Website area. That means if you need help in the future, we’ll be able to find your blog right away.