Thanks. Maybe you can help with another related problem.
In this picture, the dora indicator is South and the ura dora indicator is 3 bam.
That means the dora is West and the ura dora is 4 bam.
Since there is a 4 bam and a red five, that yields 2 dora, as shown.
No problem here.

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Next picture.
The dora indicator is 2 bam and the ura dora indicator is Hatsu.
That means the dora is 3 bam and the ura dora is Chun.
Since I have neither, with a red five, that yields 1 dora, as shown.
No problem here, either, except there was no riichi.

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Again, in the picture of that Sanbaiman,
The dora indicator is Haku and the ura dora indicator is 6 crak.
That means the dora is Hatsu and the ura dora is the 7 crak.
I have a pung of 7 crak and a couple of red fives, so only 2 dora are shown.
Again, no riichi, yet an ura dora is indicated. What is going on here?

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from Barts guide:
"Kazoe Yakuman (Counted Yakuman or Natural Limit) is awarded when you win with a hand worth a total of thirteen or more Han from Yaku and Dora (all named Yakuman hands like Dai San Gen also have a nominal value of thirteen Han). If counted Yakuman are disallowed then the top limit for "natural" hands becomes the Sanbaiman limit."
So if this game disallows counted yakuman, it might set a limit of 12 Han (Sanbaiman), even if you have more than that, disallowing the additional dora.
Note: if you think this post makes no sense, you're probably right.