But it does! 
The only thing I can think of is when in Step 3: "Suggestion Name" Had to have an under score (_) between the words or it wouldn't accept it. Otherwise I followed the directions precisely... 

I'm working on building a custom record page. 
Task: 
Update the Tabs component as follows:
Add the Activity tab
Add the following standard components to each of the tabs:
Add the Activities component to the Activity tab
Add the Record Detail component to the Details tab
Add the Related Lists component to the Related tab
I can't see the Related Lists in the dropdown, so I'm getting the error: "Lightning Page named 'New Account Page' does not appear to contain the Related Lists standard component."   
 

Completed the challenge, but keep getting ths message 
"Challenge Not yet complete... here's what's wrong: 
The Trailhead Service Email Template does not appear to be using the Contact First Name field."

This is what I have in my email       {!Contact.FirstName} , {!Contact.LastName} , {!Account.Name} , {!Contact.FirstName} 

Is it a bug? HELP! 
Thanks! 

I'm working on building a custom record page. 
Task: 
Update the Tabs component as follows:
Add the Activity tab
Add the following standard components to each of the tabs:
Add the Activities component to the Activity tab
Add the Record Detail component to the Details tab
Add the Related Lists component to the Related tab
I can't see the Related Lists in the dropdown, so I'm getting the error: "Lightning Page named 'New Account Page' does not appear to contain the Related Lists standard component."   
 

Completed the challenge, but keep getting ths message 
"Challenge Not yet complete... here's what's wrong: 
The Trailhead Service Email Template does not appear to be using the Contact First Name field."

This is what I have in my email       {!Contact.FirstName} , {!Contact.LastName} , {!Account.Name} , {!Contact.FirstName} 

Is it a bug? HELP! 
Thanks!