Thanks for sharing this with us!
1) Our Engineering Team is taking a look at Summoners being used in replays right now. The results that you see in the battle log are accurate, but there may be an issue with the replays.
2) Our Game Design Team is checking what changes may need to be made in order to maintain balance in the game.
3) The change of upgrade times was one of many recent adjustments to work on balancing the game. While the game is still new, we may continue to make these adjustments to see what works best for everyone - attackers and defenders.
As always we appreciate your continued feedback on all of our changes. Thank you!