Hi @ugurdemirezen,
Can you try the latest BlueOS 1.1.0-beta release, and confirm whether the connection issues are still present, and if so whether your Ping devices are still displayed on the Vehicle/Pings page in the web interface? That should help to narrow down whether it’s an issue in the vehicle (e.g. with the devices themselves, or BlueOS), or if it’s an issue with Ping Viewer.
If they are disappearing from the web interface, please upload the latest service log to the forum, as described here 
It would also be helpful to know how the devices are connected (e.g. are they both using USB to the onboard computer, or is the Ping360 using the Ethernet configuration?).
EDIT: I’ve moved your post to this previous one, because it’s seemingly on the same topic.