Well, that's great 😃 as managed to solve it yourself that way.
Don't disable Windows Defender and firewall. They shouldn't be an issue. You did right by installing Equalizer APO in c:\program files\equalizerapo. Other folder posses an issue for the apps. I don't know why.
I'm not sure what this "Access denied" message is coming from. It may be that the Device Selector hasn't access to the Windows registry. Have you tried to start up this app with administrator rights (right click menu -> Run as administrator)? If this isn't working perhaps some overactive anti-malware/firewall app is preventing the Device Selector to access or write to the Windows registry. I tried to find a log output to no vail. For all I know the Device Selector hasn't a log.
Changing the name of the device may solved it, well unless these newline characters aren't deleted.
7 is the minimum number of sliders. I wouldn't worry too much about how this looks. For instance the "Equalizer 5 band" config shows 13 sliders of which 8 are disabled. They are greyed out so obviously not in use.
That's just great to hear, Michael 😃
You now can download Peace beta version 1.7.0.9 from my Dropbox. Copy the executable file to c:\program files\equalizerapo\config, overwriting the existing Peace.exe. The "Graph handle delta" should now work after select a handle and using the up/down keys. The "Up/Down dB value" was only used for the up and down EQ buttons (on the main screen). Now it'll also be used for the up and down keys on an EQ slider (after it's being used by the user through any means like graph handle selection or moving...
That's just great. My guess is in this case the startup folder issue and/or an issue with the Configuration Editor settings storage in the Windows registry. Anyway, good luck.