The Plant Key is your plant’s unique user number.
The Plant Key must be entered exactly as it appears on the registration card. Check that ...
... You are not entering any spaces
... You have not activated Caps Lock
... You have not mistaken the letter l for the digit 1
... You have not mistaken the letter O for the digit 0
If you are still having problems with the Plant Key after checking all this, please contact the HovalConnect service team at email@example.com.