I have a HSA with a Consumer Driven Health Plan, not a High Deductible Health Plan. There's no option to check for CDHP. What do I do?

If you are HSA eligible, then your CDHP must include or be part of an HDHP.  So you can check the HDHP box.

This previous TT answer may provide clarification:  https://ttlc.intuit.com/questions/3500637-i-was-wondering-if-hdhp-and-cdhp-are-considered-the-same-p...