Right version for my Synology 2015XS

Got informed of this post. I’m not a NAS expert, but I do see a few odd things that might help.

I saw your other thread, Server cannot be found. I think the info is getting spread out so I’m closing that one so we can focus the efforts here.

In your last screenshot you posted the ipv4 setting. There you used a different DNS server. Set that to the IP of your router. Then try the claim it tool again. From your other thread, you had the wrong IP address for the server. It should match the one from your screenshot above. 192.168.68.127