@Random85 - Sorry that its not totally Ovale V8 related, on my Bolt mod I was using DCT cartomisers and when I got my Vivi Nova and used it for a while the DCT would not fire at all and they did perfectly before. I read here and there that the Vivi Nova's post sticks out quite a bit so that might be the cause of it. 
As of now the Vivi Nova works without issues but nothing else does. When I'm using the Vivi Nova in the future I will be sure to use a 510 - 510 adapter. Screwing up a mod's 510 connection would suck, screw up a adapter that's fine.
		
		
	 
Hey Flikka, fellow SA'n here. Welcome! See tips below. 
	
		
	
	
		
		
			It does look like the end of the vivi nova have left some scratches at the buttom of the connection. (I just don't understand how that would ruin it. I have used Vivi nova on every mod I own, and nothing ever happend to any of them) 
I Tried both an 510-Ego and 510-510 and the fire button just start flashing blue. The 2 novas doesn't work either if I put an adapter between them and the Ovale.
ahh this .... is annoying.
		
		
	 
How is it not working? Not firing the carto? Are the buttons still lighting up as normal, just not connecting and firing? Did you remove the 510-eGo connector?
In that case, maybe no need to panic. Firstly carefully clean the battery connector with a cotton swab dipped in alcohol. In fact it is better to always clean the threads and connector pins and posts on all devices regularly. 
Secondly, the center pin of the Vivi Nova may have pushed down the post on your device. You need to slightly raise that post up again. Using a micro screwdriver or something, carefully lift the corners and try to raise the connector slightly. Then connect a carto, and check. Do this until it is high enough.
Also, all adaptors can be slightly adjusted too as they have a little give. Just carefully push inside the adaptor. Usually it is just a micro adjustment that is needed.
All batteries, cartomizers, connectors etc. can be adjusted on the center pin.
Good luck and let us know if you got it to work!