Dynamics SL 2015 Student Training Materials

I keep getting this message when trying to download any of the SL 2015 Student Training Materials from the site below:

Service Unavailable

HTTP Error 503. The service is unavailable.

https://mbs.microsoft.com/partnersource/northamerica/readiness-training/student-training-materials#Default=%7B%22k%22%3A%22%22%2C%22r%22%3A%5B%7B%22n%22%3A%22WordCustomRefiner1%22%2C%22t%22%3A%5B%22%5C%22%C7%82%C7%8234347e307e377e4d6963726f736f66742044796e616d69637320534c7e36336137336634642d636362332d346366362d623336312d663230386263336335613466%5C%22%22%2C%22equals(%5C%2244~0~7~Microsoft%20Dynamics%20SL~63a73f4d-ccb3-4cf6-b361-f208bc3c5a4f%5C%22)%22%2C%22equals(%5C%2244~0~7~Microsoft%20Dynamics%20SL~63a73f4d-ccb3-4cf6-b361-f208bc3c5a4f%5C%22)%22%5D%2C%22o%22%3A%22and%22%2C%22k%22%3Afalse%2C%22m%22%3Anull%7D%5D%7D#0dda9470-9500-4d40-b5a8-d9d25e8d1ded=%7B%22k%22%3A%22%22%7D

Anyone else having this issue?