Make sure that you are using our backend SDKs which have ready-to-go functions for the paymentIntent and signature generation:
- merchantID = api_pk;
- privateKey = api_sk;
Kindly check if the encryption value is correct. It should be - base64-URL-encoded value of hash function SHA-512 as per documentation here;
If none of the above works, please contact the Solidgate Support team and provide a detailed description of the steps you took and the error you encountered. We will be more than happy to help.