If you are encountering an "Invalid Transaction, Insufficient Funds" error while trying to add funds through CSCPay, follow these steps to resolve the issue:

1. Check Account Balance: Verify that your account has sufficient funds or balance to complete the transaction. Sometimes, the funds might not be available due to pending transactions or holds on your account.

2. Confirm Payment Method: Make sure the payment method you are using (credit/debit card, bank account, etc.) is valid and has not expired. If necessary, update your payment information in the CSCPay app.

3. Inspect Transaction Limits: Be aware of any transaction limits imposed by your financial institution. If you are trying to add an amount exceeding your limit, it may trigger an insufficient funds error.

4. Wait for Recent Transactions to Clear: If you recently added funds to your account or made a payment, it may take some time for the funds to fully process. Ensure that your recent deposits have cleared before attempting another transaction - learn more.

5. Review for Additional Fees: Some transactions may incur fees that could impact the available balance. Make sure to take any service fees into consideration when checking your available balance.

6. Enable Notifications: Turn on notifications for your CSCPay account to receive alerts about any transaction issues or funds availability. This can help you manage your account more effectively.

7. Contact Support: If you have verified all the above and the issue persists, reach out to the CSCPay customer support team for assistance. They may provide insights into any issues with your account or the payment processing system.

8. Consult Online Resources: Check online forums for users experiencing similar issues. Engaging with community discussions could provide specific solutions or experiences that might help you resolve your problem - learn more - learn more - learn more.

By following these steps, you should be able to identify and resolve the issue preventing you from adding funds to your account.