AWS-CreateDSManagementInstance timeout, won't ever start

Hi, I'm trying to figure out how to manage the first AD I've ever set up on AWS, and I'm confused as to why the management automation won't run.

If I initiate it from the console, using just the default values, it tries to start but eventually times out on step 26, WaitUntilInstanceSSMManaged. This never succeeds regardless of the instance type used. There is one other suspicious error on step 15, TagInstanceProfile, where it seems to be indicating that when trying to apply the tag, the automation is wrong and passes the wrong parameters:

Parameter validation failed: Invalid type for parameter InstanceProfileName, value: ['AmazonSSMDirectoryServiceInstanceProfileRole'], type: <class 'list'>, valid types: <class 'str'>

So that's odd. Is this automation no longer maintained?

I can see that the instance is in fact starting but I assume it isn't starting correctly - regardless, when the automation times out, the instance is automatically destroyed.

I'm starting this in an unused, test account, and there aren't any conflicts for the default role names used in the automation.

I tried running the automation from the CLI just to see if that would work for some reason, but when I do that, it literally fails on step 1 and tells me the directory ID is invalid (even though I verified it is correct.)

Any ideas why the automation won't run?