The match started at 12:55pm, UK time, as planned. Everything normal. My last bet was at 12:12pm UK time (as shown in screenshot). And the other bets were even yesterday. And as you can see from examining the odds history, none of those prices I took were unrepresentative of the wider market, so the grounds on which they are cancelling the bets are completely bogus.
Of course the first thing I did was contact the chat, and I was told to 'wait' (by Molly), and then told twice that the bets were cancelled due to an 'error with the odds'.