Well to further add to what JUGLAR DEL VIENTO
said
I will say these could have happened
- The player have not banked correctly.
E.g banking low BG and hitting high level( but these should not matter much), or
not banking all the bank needs before completing a BG, All resources have to be put in, plus up to 25% bank.
- The player was using a bad method of doing BG,
E.g all in method above level 50
defending and offending with wrong unit types - The player immediately tossed his reward back into the bank, these inflated his bank, at a level of up to 15% in bank value per BG. These could have easily happened if she hit a sweetspot BG and did many BG immediately after. thus losing his sweetspot rewards(by banking it back) and accumulating more indues fees as she does more BG
If you are using the banking method remember, every BG has its separate bank value. And if you need rewards, you need to pay each each BG what is due. Think of a BG as a ATM, and not a slot machine, every time you make a withdrawal the bank charges you fees of up to 15%. So if you withdraw from 10 ATM, you will be have to pay back 10 times 15% back, in every resources you gain back. These is the foundation of the banking method, and many people don't get it. To maximize your reward, make sure that every time you withdraw from your ATM when your are in a sweetspot region. To minimize your rewards, withdraw only when the balance you can get back from your ATM is higher than that of your highest ATM( e.g ''yellowing/banking the highest level BG). These method is faulty, if you hit zero, then, you are likely to try somewhere else( going back to 3).
These is the best explanation I can make from what was explained to me, when I encountered similar a problem.
Official statement
from Plarium
We don’t share the exact algorithm for the feature, but here’s the basic outline: every time you attack or defend a [prize], your unit losses are totalled up according to each unit’s price in [Rum, Gold, Lumber]. This running total is your Payout Number. When you get payout from a [Prize], the spread, number, and type of Units or Resources you receive are randomly allocated as measured in resources based on that total.
The longer you go without receiving a payout, the higher your Payout Number total is becoming and the bigger your eventual reward will be (that's if you continue to bank). Now, there are also some randomized triggers when running this calculation – first, it does a “spin” to see if this infestation will pay out this time, or just keep adding to your Payout Number. Depending on how this spin goes, it’s possible to go extremely long periods without getting a payout (even though your Payout Number is still growing over time). This is especially true if you've received big payouts on higher-level [Prizes] and then go back to hitting low-level ones.
The payout frequency is a little higher for the [prize] that pop up directly on the left side of your screen, but those require hitting consecutively higher [prizes] each time. Sometimes you can also “spin” and hit a superbonus, which will trigger a payout worth more than your total investment, but those don’t pop up much.
The biggest misconception is that regular [prizes] each have their own discrete payout amount. I know it often seems like we’re laughing maniacally to ourselves as we change each [Prize] Level’s payouts every week to confound everyone – this isn't true. It doesn't work that way.
The payouts are based on your collective Payout Number; the last time you triggered a payout, and how many Unit losses you've suffered in the meantime. Treat it like Black Jack; play with a long view, don’t bet everything you have, and quit when you’re ahead. It can be frustrating, but senior players have experimented with different strategies and gotten pretty good results. Ask around, but be prepared to lose a lot of troops to get there – don’t commit anything you’re not ready or able to lose without being hamstrung.
Some advice: take advantage of Global Mission events to “double dip” on your investment. Also don’t forget to include the XP, and Ranking Points, ranking awards, Achievement Bonuses, and other freebies you’re getting from taking on the Infestations.
Also, if you want a sure bet, don’t forget about the Campaign [Prizes]. Each one of these has a fixed payout in [Brethren] units that you can view before deciding whether or not to run the mission – plus they all have a pretty cool storyline and audio content, but the higher ones get really, really tough.
In the coming months we’re planning to experiment with the payout frequency algorithm to make it a little less discouraging from the player end, so standby for future announcements.
As moderator you should provide information that should help players in they game, not to make contradictory comments that will confuse those who read your posts. I marked few of your words to explain what i say:
"not banking all the bank needs before completing a BG, All resources have to be put in, plus up to 25% bank." that contradicts your post that you say is official plarium statement : " every time you attack or defend a [prize], your unit losses are totalled up according to each unit’s price in [Rum, Gold, Lumber]. This running total is your Payout Number. "
. I take a screenshot of my squad, and do the all in method for all O BG requiring cavalry and infantry. After each BG I toss my gains back into the catamp and continue untill I hit a level 49.When I am done I go to screenshot and subtract how many units I have lost from my BG squad. These will be what I have banked. I then go to my excell unit counter and substract my ''gains'' or reward( those units I gained from BG and sent to the catamp. These will be what I owe back so far. Then I go to the dreaded log and just expand it. adding a day.
) but nonetheless splendid and decorated Lords have contributed to these thread. 
