I am now working on the Implement Roll-Up Summary Fields module in trailhead, when I tried to create roll-up summary field as the guideline said, I can't find Amount field in the Field to Aggregate. Could you please help? Thanks.

I am now working on the Implement Roll-Up Summary Fields module in trailhead, when I tried to create roll-up summary field as the guideline said, I can't find Amount field in the Field to Aggregate. Could you please help? Thanks.

Hi,
An error occured verifying the Salesforce Trailhead challenge

Customize a Sales Path for Your Team
Work with opportunities in the kanban view

https://trailhead.salesforce.com/projects/customize-a-sales-path-for-your-team/steps/work-with-opportunities-in-the-kanban-view

Error: Challenge Not yet complete... here's what's wrong: 
Couldn’t find filters for the opportunities with the correct information. Please double check the instructions.

Other strange things:
The Filter Logic is not mentioned.
I do not see the United Oil Plant Standby Generators opportunity/card
and i cannot save the list view...

Any idea's how to complete this challenge?

Thank you and regards, albert