According to the latest government regulations, if Aadhaar and PAN are not linked by 30 June, 2023, your PAN will become invalid and you will not be permitted to invest (buy/sell) w.e.f July 01, 2023 on Groww.
If you have already linked your PAN-Aadhar, It may take the exchanges 3 days to update their records and unblock your trading account. Please try again after 3 working days.