Is there a way to clear the old and obsolete tasks in "My Tasks" view in Nintex Mobile?
I couldn't find any buttons or options to do it.
I'm not sure whether there is a one-click solution.
what I usually try is remove (previous) running workflow instances through workflow settings, purge workflow data in site settings and clear mobile devices cache.
any single action of these never removed all the orphaned tasks. either I haven't identified any exact procedure how to proceed. it's always try and fail approach.