sorry to hear that, but not much we can do. You could send us your client logs. Maybe we see something.
But besides that “everything” could have happend.- And since its PvP, our actions are restricted.
Sorry was in a hurry and missed the HWS part.
Yes your structure was CV Class 6. Only Class 5 is allowed. There are direct measures to prevent oversize structures in PVP to prevent exploits.
I guess you added something to it right before.
As an exception I restored it close to you. Keep the size in mind next time.