In Nintex Workflow for SharePoint (every version), when you use the “Flexi task” action, that creates and assigns tasks to specific users, if you (as a viewer) are not the assignee, workflow tells you that “You are not authorized to respond to this task.” – then to make yourself authorized you have to click the “delegate” link, then to reassign that task to yourself.
Have you ever faced that issue? When your workflow is running smoothly and out of nowhere it gets suspended? Then when you hover the “i” icon to get more details you are informed, that “The workflow instance was too large to persist”? Well I had. Here is what I found and how I recommend to solve it.