ADS symmetric coupler implementation irrational results

Hello Slawomir, i have built a 9 section simmetric coupler by the table bellow from the attached article, i attached every calculation of every cell bellow,
why i get such a bad result, its not supposed to be
do you have any idea why its happening,from the S parameter results i get the ports are not even matched?

Thanks

01126050_simetry (1).pdf

this last part is not converging ,is there a way i could solve this convergence problem?
i need to keep the Zeo and coupling values .

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