Transdem and yahoo maps

Yahoo maps don't work and have come up blank. I use MS Virtual Earth server, which is Bing.

The classic Yahoo Maps tile service has been retired. Yahoo now uses "Here" (formerly Ovi, formerly Nokia, formerly Navteq). "Here", however, does not allow anonymous access, it requires an account and it will trace your activity. Since we have other providers, I think we can do without "Here".