how to associate recurring tasks add on with 2 separate kanban boards under 1 project

[Diana Kaufman]

how do I associate recurring tasks add on with 2 separate kanban boards under 1 project?

[Nic Brough -Adaptavist-]

Kanban boards are not "under a project", they select a set of issues based on a filter.

To associate tasks with them, you need to make sure the filter for each board includes the tasks you're raising for it.