Hey there.
Simply by virtue of this being a blueprint only package, dedicated servers cannot be supported out of the box as in order to do dedicated servers, a small amount of C++ and/or a plugin is required. It’s a super simple process to convert it over to a c++ project and get dedicated servers up and running, and there is a HUGE amount of content covering this process in a large amount of detail, including a wonderful tutorial by Allar (creator of the Generic Shooter), which can easily be applied to the MSGT. However, if you are looking to get dedicated servers up and running without any effort, you will need to look for a project that is not 100% blueprint, which this is not.
As for the save system - there is currently no save system included. Given that UE4’s savegame format is really bad for multiplayer (it’s clunky, slow, unreliable, super easy to cheat with and prone to corruption with multiplayer projects), I can’t really offer one in a pure blueprint project again. I may be incorporating a version of this in the future for use in singleplayer and very, very small scale multiplayer (co-op between 2-4 friends sorta small) but I am reluctant to do so due to the likelihood of people taking this and trying to apply it to large-scale multiplayer, and the issues that will present for everyone involved. Again - if you want a save system setup for large scale multiplayer without any effort on your side, you will need to look for a project that is not pure blueprint, and most likely costs a lot more than $40. That said - you can easily hook up one of the many completely free mySQL/SQLLite/etc. database systems (there are even free plugins that do most of the work for you) to have a fully functional save system incorporated into the template in no time.
At the end of the day - this template is intended, as is stated on the marketplace page, to be the beginning point for your project. There is a lot of features and functionality included, and it will likely save you hundreds to thousands of hours of work (depending on what exactly you want/need for your game, your skill level, etc.) but it is NOT a complete game that just needs some different art. It is a template to build upon, and at the price of $40 I am confident in saying that you will not regret the purchase if you look at it as a template 
Hope that helps!
- apoisonedgift