No, it is not possible to invest using credit/debit card on Groww.
SEBI rules say the investments should be made through verified bank accounts only. It is not possible to verify bank accounts when investments are made using a credit/debit card.
You can use the following options:
1. UPI apps (Google Pay, PhonePe, BHIM, etc)
2. Net banking
3. NEFT/RTGS/IMPS