If you needed to manually delete the oem user, I suspect you forgot to run oem-config-prepare (as the installer instructs you to) after the customisation was done (on the first graphical boot). I suspect this is the root cause of your other problems as well.
The sudo group is not used, so adding users to that group won't help you a bit.
If you needed to manually delete the oem user, I suspect you forgot to run oem-config-prepare (as the installer instructs you to) after the customisation was done (on the first graphical boot). I suspect this is the root cause of your other problems as well.
The sudo group is not used, so adding users to that group won't help you a bit.