If your EWS certificate is from Uttar Pradesh and written in Hindi, it can still be valid for Delhi Police recruitment.
But it must follow the central government format for EWS certificates.
Delhi Police accepts EWS certificates issued by state authorities if they are in the correct format.
If it's not in the central format, you may need to get a new one in English or bilingual.
Always check the official recruitment notice for exact document requirements.
If needed, visit your Tehsil office to reissue the certificate in the proper format.