next time this happens try changing his DNS to a public one, this happens sometimes when the routes are jacked.
some Public DNS addresses to try:
4.2.2.2
4.2.2.3
8.8.8.8
75.75.75.75
76.76.76.76
next time this happens try changing his DNS to a public one, this happens sometimes when the routes are jacked.
some Public DNS addresses to try:
4.2.2.2
4.2.2.3
8.8.8.8
75.75.75.75
76.76.76.76