I spent the last 4 hours doing Vykas G3 and had disconnected at the last second for unknown reasons. I was met with the inability to receive any rewards nor able to open the box as It had not counted me as completing the raid. I’m not quite sure why it does this, it feels off as there’s clear evidence that I’ve done damage and have gone through all the mechanics on the raid and only disconnected at the very last moment I don’t believe I should be punished for something that was uncontrollable.
Hello and welcome to the forums @Syvende,
I am sorry to hear about your lost entry and therefore the reward based on getting disconnected near the end of a run but please bear in mind we do not provide re-entry tickets in cases not caused by a verified server crash or outage.
We’ve set up a system that will automatically reissue entries in scenarios caused by a verified server crash or outage within 48 hours. That is to say, if the system did not reissue your entry ticket automatically on this occasion, we will not be able to do so manually. You can read on how we handle these scenarios here.
Hope this helps and see you in Arkesia! 
Wait for reset because you wont get the ticket and many people having this problem same as me.