I've played multiple ranked games today where I didn't receive my points.
The points were showing on my summary but weren't added once I went back into the lobby.
[CM - Edited title for clarity]...
Ideas
Had a similar issue. I won a match which was going to place me into d3 from d4 received "unable to find party server" and when I got to the menu screen it showed I was still in d4. I could then view the summary from the recent match showing the points I earned and that I ranked up.
Yes! That's the same error message I received too.