If it were a lag or loading issue, I would have to log back in several times to get the teleport stones to load, but they don’t.
I don’t think it’s possible to re-install the teleport stones in the exact same place because it would be a duplication, but I’ve been able to do it.
If the server does not know that I have placed the teleportation stone, then either it cannot be placed in the first place, or it disappears after the server reboots, but I have confirmed that the teleportation stone is there immediately after the reboot.

I just saw a reply from zendesk.
Look at this forum."
This was all I got.
Nothing was resolved.
I gave them a detailed location and time the teleport stone disappeared, and this is all I got.
I am Japanese and my English is not very good, so I use a translation application to communicate with zendesk and here.
It is very difficult and time consuming.
And this is the result. I am very disappointed in funcom and zendesk!

In my opinion, it is a fraud by a fraudster.
I have tried to stay logged in all day today, pretending to watch for cheaters.
I logged out a few times and logged back in a little later to check the teleport stones.
And as a result, not a single teleportation stone was lost!
If the teleportation stones disappear again when I return to normal play in the future, I am sure that the cause is cheating by the cheater.

I would like to add one more thing
I’ve been seeing a lot of reports of this on Twitter lately.
“The arena champion killed all the slaves in my base.”
As you know, the arena champion is located in Krael, in the land of the banished.
She is not present in the regular field.
They say that she appeared at a stronghold in the regular field and killed all the slaves.
And this happened on a PVE server, so even if you enslaved her in some way, she can’t kill other players’ slaves under the original specifications!
And when the victim reported this to zendesk, they only received a completely unintelligible reply!