Hey Chris!
Thanks for letting us know about Appmaker - we've had a bunch of users
email or message into our channels this week to let us know it's been down
and buggy. The good news is that the product team is working on building
the new Webmaker app that will launch in just a couple of months so a much
more updated version is being released soon and this old one will be
outdated.
Not sure if others are having problems loading the page but here's a
workaround that has proven to work for others:
https://support.mozilla.org/en-US/questions/1062528#answer-729887
Amira
Amira Dhalla
Twitter/IRC: @amirad <
https://twitter.com/amirad> | Help us #teachtheweb
<
https://teach.mozilla.org>!