According to your API documentation for "Get Workflow Instances,"
https://help.nintex.com/en-US/nwc/Content/Designer/Actions/NintexWorkflowCloud-GetWorkflowInstances.htm
it only returns "up to 30 instances."
This is a problem for us because we built a really useful utility workflow that provides our users a summary of running workflows, so that they can contact those involved in task approval and get those workflows completed.
But due to this limit of 30, it really reduces the number of results that our utility workflow can display. It may only show the user 12 running workflows when there are really 28.
It would also help if this API call can be filtered on Workflow Name. It does not have that filter, so the workflow must loop through all the running workflows and pick out the relevant ones.
Please make this API more useful by implementing these changes.