What you were expecting to happen, and what actually happened?
I was expecting standard awards for an 8 win arena run.
I received 325 gold instead. My win was announced in chat, but guild activity log shows nothing.
What are the steps to make it happen again?
I don’t know. 
Same thing happened to my little brother last week.
Curiously, I think it was also on a Monday?
Might have something to do with the weekly reset? Did you do the entire run in one go? Or leave it overnight in between? I sometimes see people’s guild record getting reset on Monday, but before the actual reset hour. I’m wondering if perhaps your Arena count was reset as well?
I’ll pass this to the team. Did you get any of the retry messages when you won?
Make sure (if you haven’t already) to contact our support team to get your missing rewards.
No, which is what I thought was weird. It was an immediate response.
Thanks for the heads up. I didn’t know if I needed to do a real deal support ticket or just post in here.
I had this before as well, but with 5 wins, it followed a disconnect error…