Hi. I'm thinking of setting up my own The Powder Toy server for TPTMP. I've tried searching, but most articles are old and out of date. Can anybody help me? If you do, there will be great gratitude from me towards you.
you could just set up your own room instead of a separate server
This is the recommended route. Setting up and hosting a TPTMP server is complicated and just not worth it. Since you'd need to maintain the data, resolve authentication, set up your network properly, and point any TPTMP client scripts to that address/port. It's nothing like setting up a Minecraft server or whatever.
A VPS? I know that using a VPS for other types of game servers is possible but I don't know if it would work for TPT. This might have been what Lockheedmartin was saying is complicated, a VPS can be confusing for a first-time user.