Maintenance for the week of March 24:
• PC/Mac: NA and EU megaservers for patch maintenance – March 24, 4:00AM EDT (8:00 UTC) - 10:00AM EDT (14:00 UTC)
• Xbox: NA and EU megaservers for patch maintenance – March 26, 6:00AM EDT (10:00 UTC) - 12:00PM EDT (16:00 UTC)
• Playstation®: NA and EU megaservers for patch maintenance – March 26, 6:00AM EDT (10:00 UTC) - 12:00PM EDT (16:00 UTC)
I don't know why from a lore perspective but from a game perspective they say that Tel Var Stones will only drop in areas which are flagged for PVP to ensure that there is still always some risk of other players even if it is in your Alliance Sewers.