Have you read the Blog Post url it refers you to in your png ?
I paste from it :
"If I don’t sign up for a new AppKey, will my service be shut off?
If you’re currently getting direct tile access, your service will be shut off beginning Monday, July 11, 2016. We encourage you to sign up for a plan to access an AppKey and access our various mapping solutions."
they have discontinued the direct access via URL, now you have to use a API key.
You can get it for free with a limit of 15000 transactions a month, if you go over that you'll have to pay.
Get your api here:
Hope this helps.