Solana ‘Account not found’ when sending API request

This may seem like a simple issue but I am unsure how to fix ‘Account not found’ when I send a request to API to fetch user’s Solana balance. Any advice would be very helpful!

Error getting account info: Error: failed to get info about account ####(my Wallet): Error: 403 : {“jsonrpc”:”2.0″,”error”:{“code”: 403, “message”:”Access forbidden”}

Here’s more info on my current set up, I can connect my wallet, but when sending request to API about my wallet, it fails:

Wallet Connection Setup:

• Using @solana/wallet-adapter-react for wallet integration
• Currently configured for Mainnet (WalletAdapterNetwork.Mainnet)
• Using PhantomWalletAdapter with autoConnect enabled
• Connection settings: commitment ‘confirmed’, preflightCommitment
  ‘processed’

Balance Checking Process:

• Using getAccountInfo with ‘confirmed’ commitment
• Implementing retry logic (3 attempts with 1-second delays)
• Using getBalance with ‘confirmed’ commitment after account
  verification
• Refreshing balance every 2 seconds

Transaction Flow:

• Creating transaction with latest blockhash
• Using confirmed commitment for transaction operations
• Transaction timeout set to 60 seconds
• Implementing exponential backoff for status checks (10 retries)

Current Issue:

• Wallet connects successfully but getAccountInfo returns null
• Error suggests account not found despite wallet being connected
• This happens consistently even with retry logic
• All operations are configured for Mainnet to match user’s wallet
  network

Key Environment Details:

Network: Solana Mainnet
RPC Endpoint: Using clusterApiUrl(network) from @solana/web3.js
WebSocket endpoint configured automatically from RPC URL
Using standard Solana Web3.js v1.x library