I tried to install the package for the security superbadge and got the following error:
The AppExchange package has been deprecated and can no longer be installed. Please try installing a newer version, or contact the package owner directly to resolve.

I couldn't find a different package when searching the AppExchange. Is this package still available? Could the link in the superbadge be updated?

Error:-
Challenge Not yet complete... here's what's wrong: 
There was an unexpected error in your org which is preventing this assessment check from completing: System.DmlException: Insert failed. First exception on row 0; first error: CANNOT_EXECUTE_FLOW_TRIGGER, The record couldn’t be saved because it failed to trigger a flow. A flow trigger failed to execute the flow with version ID 3017F000000gR4k. Flow error messages: An unhandled fault has occurred in this flow
An unhandled fault has occurred while processing the flow. Please contact your system administrator for more information. Contact your administrator for help.: []
And in developer console it shows-: FLOW_ELEMENT_ERROR The flow failed to access the value for myVariable_current.Account.Type because it hasn't been set or assigned.

I'm unable to check step 2: Automate Accounts because I'm receiving this error: Challenge Not yet complete... here's what's wrong: 
There was an unexpected error while verifying this challenge. Usually this is due to some pre-existing configuration or code in the challenge Org. We recommend using a new Developer Edition (DE) to check this challenge. If you're using a new DE and seeing this error, please post to the developer forums and reference error id: ZKCVFIZH
 

I am trying to complete the Trailhead Module "Data Security: Controlling Access to Fields"

Create a Profile and Permission Set to properly handle field access

The Marketing Coordinator and Account Manager both require access to view and update Account Records, but only the Account Manager should be able to see and edit certain fields. Specifically, only the Account Manager should be able to see and edit the Rating field. The Marketing Coordinator should not be able to see or edit the Rating field. Create one profile and one permission set with the appropriate field-level security to solve for this use case.The profile must be named 'Basic Account User' and result in an API name of 'Basic_Account_User'. It should use the 'Salesforce' user license type.
The permission set must be named ‘Account Rating’ and result in an API name of 'Account_Rating'.


This is driving me absolutely insane.  

I created a custom profile named Basic Account User, it is Read on the Account Object and the Rating field is unchecked for both Read and Edit.  
I created a permission set named Account Rating, it is Read & Edit on the Account Object and the Rating field is checked for both Read & Edit.  
I have both the profile and permission set assigned to the other user in my Dev Org.  I logged in as this user and the permission set is functioning as expected.  With the permission set he can see and edit the rating field, without the permission set he can't see it at all.

Yet I keep receiving the "The 'Basic Account User' profile did not have the appropriate object and field-level security for the Account object" error message.

What am I missing? I have tried every conceivable combination.