In Chrome 42 and above, some Flash content may not run automatically, even when the site is explicitly allowed to run Flash without prompting. This is because Chrome includes rules to suppress Flash content it considers less important.
Recent versions up to Chrome 60 had a flag to eliminate secondary prompting, at:
(Google removed this flag in Chrome 61. That version has not been fully tested, so automatic bypass may no longer be an option.)
Choosing Enabled for the flag will only bypass prompts for sites on the Allow list of the standard Flash settings, at:
the entris for ConnectED and related sites is: