Won't Add App to Queue

After creating an app, upon pressing the 'Add to Queue' button, I get the error: 'Whoops!
Whoops, this is an issue on our end.'

I am using the free service and have the following options:
Crawl Name
educationTrends

Depth Level
3

Crawl Size
10000

Crawl only internal links

Page Content
Text Content, Images, and PDFs selected

Meta Information
Page Title

Thanks
Joe