OpenRA

Non-compatible maps. How to update these if they arent my maps?

You'll need to download the map, update it locally using the utility (see https://github.com/OpenRA/OpenRA/wiki/Utility), do manual fixes if needed and the upload it to your own account.

Navigate to your OpenRA directory, press ⇧ and right-click: choose Open PowerShell window here. Type in .\OpenRA.Utility.exe to see a help screen.

What does this mean? Specifically where do I go to open PowerShell?

You can either shift+right click and select the option in the dropdown that opens, or click on "File" in the top left of the Windows file explorer and select "Open Windows PowerShell".

none of the commands in the utility works

What is the output you get?

OpenRA.Utility.exe : The term 'OpenRA.Utility.exe' is not recognized as the name of a cmdlet, function, script file,
or operable program. Check the spelling of the name, or if a path was included, verify that the path is correct and
try again.
At line:1 char:1
+ OpenRA.Utility.exe [cnc]
+ ~~~~~~~~~~~~~~~~~~
+ CategoryInfo : ObjectNotFound: (OpenRA.Utility.exe:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException

Try using ".\OpenRA.Utility.exe" instead (the ".\" is important when you use PowerShell). Also make sure that the file actually exists in the directory you are trying to run it in.

What maps do you want updated? I may be able to do it.