I am one of the members of the tibiabosses team. Actually we have some problems with the site but the character "Strona zablokowana" is certainly not one of us. It is just a scam. We also do not collect such donations. If you want to be in touch with us and follow what is happening with the site, the best way is to use our discord.
To answer your title question - We are having some problems with the hosting service and that is why the website is not working. We are working on solving the problem.