X-Squawkbox traffic doesn't move

I have X-Plane 9.31 and downloaded x-squawkbox and have connected to Vatsim fine with no problems with Voice Etc. The issue I have is that the traffic at whatever airport I am at is frozen and doesn't move. For example if I connect and there is an aircraft landing and it is flaring then it just sits and floats at the same altitude and position for ever and doesn't move. If I disconnect and reconnect then it is at another location after re-connecting but it statys at the location and is frozen. It appears that I am getting the initial position when connecting but then I don't get any updated possitions for it so it never moves. During the whole time I am connected I am able to communicate with whatever controllers are online at the time fine. I have flown for years on Vatsim in variuos version of MSFS and never have seen this issue.Any thoughts idea's or solutions ?Thanks in advance !Hank Adam