Another mail from gree, with a little more details on the algorithm. Still being an ass on their side though.
Hello Saint,
Thank you for contacting Kingdom Age Support. I apologize for the delayed response.
We are forwarding your report over to our engineers to make sure everything is working as intended, so thanks for being patient! Below, you will find a quick explanation concerning the three types of matching we offer now, as well as an explanation concerning match up times. Thanks for being patient while we investigate things, and thanks so much for gaming with us!
Premium matches are automatically enabled when a match is particularly closely matched, e.g. both guilds are very close in rank or power. When that is the case a premium match is triggered which lets players gain up to double the points for each attack on an enemy. There is no limit to how may times premium matches may occur.
There are three levels within the Premium Match-up feature: Premium, Epic and Legendary. Premium matches are the base line, where guilds are similar but not spot-on the same in power. Epic matches are where guilds are extremely close in power. Legendary matches occur when guilds are almost identical in power. Matches are based on guild power, number of members, and guild rank in the leaderboard. The closer guilds are, the better the match-up.
The system looks at the following to determine an appropriate rival guild:
--The overall strength of your guild: The sum of your guild's power will be compared to the sum of the other guild's power when looking for potential match-ups.
--The Guild's WD Rank: This is based on how well you are doing in the event.
---How many match-ups you have had with the guild during the event.
As time goes on without a match, the parameters will relax slightly.
Please keep in mind:
-- It can take up to an hour to receive a match after declaring war
--You may not declare war within the last hour of the event
We are constantly tweaking the algorithm to try to get guilds matched up as quickly as possible. If you have any further questions about the game please let me know.
We are not authorized to refund for this issue. I apologize for the inconvenience caused to you.
Regards,
Brian
And what's up with it can take an hour to declare. I do hope that is some sort of bad joke?