Followup... Having requested a refund,as after two weeks of messaging with a tech who kept asking me to do the same thing over and over and clearly not reading what I posted back to him, they found someone at EN who could actually assist with my issue after I demanded a refund. Turns out the registry editor in Win10 simply will not work. It's a known issue. I upgraded to the latest Anniversay version of Win10, but still doing a registgry search through ctrl-f crashes regedit.
The much more sharper knife in the drawer technician sent me a ticket message after I insisted on a refund and stated no matter what, if I could not get into the registry and search and delete certain items, EN would simply not install. Of note: they registry strings they wanted me to find all referenced previous installs and the installer temp file CLEARLY declared these strings were not found, one by one. The EN XML installer then crashed when attempting to install. Temp file reports it cannot find the msi file, even though its sitting right there.
A suggested workaround was to go to the Windows App store and download and install the desktop client from there. I now have ver 6.4.2 desktop client on my pc. As soon as it installed it noticed I had 3 computers, listed them by name, and enourage me to sign up for a premium account. I assume this is because the duller knife in the drawer tech actually canceled my account, per my request. I signed up AGAIN for premium, won't get the first by credit back for 10 days, but I'm up and running. I even have the notes that were in the account when I cancelled restored.
THANK YOU to "you know who you are" tech at EN. I'm sure there are tens of dozens of folks who may not have been as patient or forgiving. I do feel fortunate to have the issue fixed. Thank you EN.
Bottom line: they went the extra step to save a customer who had walked away. Perhaps there is hope.
I really wanted to give this software a go.