Do not obtain keys from:
A product key is a unique alphanumeric code used to verify that your copy of the software is genuine. While you can download and install PlanMaker (often as part of SoftMaker Office FreeOffice) without a key, unlocking the full "Standard" or "Professional" features requires purchasing and entering a valid product key.
SoftMaker offers several legal pathways to get a genuine PlanMaker product key:
Here is the secret that many "free product key" seekers overlook: SoftMaker offers a completely free, legal version of PlanMaker called FreeOffice.