There are a few possible causes to this problem.
The most important and fundamental, is that you have set the fish tag color properly inside Hiroku
If you want to be seat against untagged players, please select the unknown tag
Another possibility, is that your seat priority configuration is set to avoid certain seats, please make sure to check our video that explains this feature in http://help.hirokuscript.com/advanced-options/.
In the picture above, Hiroku is configured to just attempt to get god and jesus seats, and therefore it would not seat you in other seats even if they’re open.
The last possible cause, is that your session plan configuration is avoiding to seat you, please make sure to check your session plan configuration to make sure everything’s set according to your needs (this is located in General Configuration, “Session Plan” tab).
If none of these configurations appear to be the cause of your problem, please contact our support via skype (id ‘hirokuscript’)