Yes to run it you have to do this:
chmod 777 install_max2play.sh
In the install it say run it like this:
./install_max2play.sh 2>&1 | tee install_max2play.log
You get a install_max2play.log file then.
The script has a error it don’t show the „./“ before the command you have to do what you did back up a folder and run it or use this ./ command. If you back up a folder it will do a little error at the end saying it can’t find the install_max2play.sh to delete it.
All so a better way to install it just do a wget like this: