Sorry, this is going to be a long post. Played my second round with bfghd and he got disconnected after the 15th hole with the score 3 under to him, 4 under to me. We don't have a card to prove that but we each took a screenshot to show our irons on the 15th (which I birdied) and I took another one at the 16th tee while waiting for him. The score can be seen in each one.
It still says hole 15 here because the screen hasn't yet updated.
We restarted and each played 1 shot worse to that point so hope these screenshots are OK to prove our scores after 15 holes.
We got the card, another iron shot and the green from our second go no problem. I haven't entered a score yet in case our scores aren't accepted on the above evidence.