Hi David,
That is strange, I am able to see the issue on your site but I cannot reproduce it on my local machine nor on demo.mojoportal.com. Reviewing the source code log I see a minor change on April 8 that cannot be an issue and no other changes in a number of months.
Are you seeing anything in your mojoportal log that gives any clue?
I would try generating a new app id and key
Hope it helps,
Joe