I had the issue indicated in https://forum.navigraph.com/t/i-can-no-longer-log-in-to-simbrief-dispatch-in-msfs-2020/18061/27. The solution allowed me to log on to simbrief in msfs 2020 lobby, but in game on the ois, I still got os error 29 and couldn’t log in. And when the problem was temporarily solved, I had some other error that prevented me from updating the navdata. In dire need of help