I would love to do that, but that is not an option. I don't have and I will not have access to the cPanel
EDIT: I just found the error.log file through FTP. Everything is ok there, no errors in the last 3 days
EDIT 2: I tried to upload a file in the media gallery and I saw that Wordpress didn't had permissions to upload the file. I am thinking that this might be a problem too. I changed the permission for "uploads" folder to 777 and now i can upload files. I also checked if my XML files are being uploaded and they are. I also changed the permissions for the imported plugin to 777. Still the same problem