Marios190,
OK, I am a little confused now. Let me elaborate. When I first checked your site, I saw TinyPortal installed. Sometime either this morning or last night, I looked at the site you linked to in your second post in this topic. I saw no indication at that time that TinyPortal was installed. However, I did see an indication that you had installed EZPortal. Now, as I look again, at this very minute, I notice that you have upgraded the site from SMF 1.1.11 to SMF 1.1.12 and no portal is installed. To reiterate, it does not look like TinyPortal is installed right now.
Now, it seems that you are trying to get things working by changing things but I believe that it might be confusing the issue. It is difficult for us to help you under these circumstances.
After you reinstall TinyPortal, please take a screenshot of your Admin Menu (similar to the image I attached in my post above) and let's see if we can get your problem solved. Also, please tell us what your default Forum Language is.
Let us know when you have done this so that we know that you are ready for us to try to help you.
ZarPrime