I have not yet received a reply but what I have tried (to no success) is:
l. Uninstalled and reinstalled.
2. Deactivated (Control Shift D)
Chatted on line with the help support -- useless. They referred me back to this forum and when I said I have found no help on this forum they told me they were not a technical support group! I am shocked at how poor the support is.
Why didn't you use the forum for "Adobve Digital Editions" ?