Seems that wget commands work but response is VERY slow. As a workaround i've modified install.sh file to set all wget commands a timeout of at least 25 "-T 25" and it works
Example:
wget -O $pyenv_path/pyenv/pip.txt $download_Url/install/pyenv/pip.txt -T 25
wget -O $pyenv_path/pyenv/pip.txt $download_Url/install/pyenv/pip.txt -T 25
wget -O $python_src $download_Url/src/Python-${py_version}.tar.xz -T 25
wget -O $pyenv_path/pyenv/bin/activate $download_Url/install/pyenv/activate.panel -T 25
wget -O $pyenv_path/pyenv/pip.txt $download_Url/install/pyenv/pip-3.7.8.txt -T 25
wget -O panel.zip ${download_Url}/install/src/panel6_en.zip -T 25
...