just for the archive:The ROM looks nice, however it does not seem to support "adb root:". LineageOS has an entry "Rooted debugging" right below the "USB debugging" setting, however, the build states "userdebug".
crDroid downloaded the offcial way through the website. has no build mode mentioned in the build number, hence, I guess it is production / user, and there is no option in the Developer settings, neither does a search find anything for "root", albeit "adb root" replies, "ADB Root access is disabled by system setting - enable in Settings -> System -> Developer options".
Actually it would be nice to:
1) either change the error message into the one "adb root access is not available in production envrionment" or something like that,
-> in order to let your users know, that it is intentionally not available at all
2) or enable / change the build to allow adb root.
-> in order to use it ;-)
crDroid v7.14 has the option "Rooted debugging" right below "USB debugging" in the Developer options. adb root is working now.