The activation code is case and punctiation sensitive at this time.
Make sure you select the proper software edition (Standard or Professional).
Examples of common issues:
1. Do not use Rd in place of Road.
2. If you request Rd. (with a period) do not try Rd or Road (no period or spelled out)
3. If you request your full company name with the entity type, do not drop LLC or Inc, etc.
4. If you request MY COMPANY NAME do not try My Company Name