The easy mistake after the move to Sonic is carrying the right-looking token on the wrong side of the wallet. The current spookyswap app is the decentralized exchange interface for swaps, liquidity, farms and staking on Sonic. It expects Sonic mainnet, chain ID 146, and native S for gas.
That last distinction matters. Wrapped S can sit in a pool and look perfectly usable in the asset picker, while a swap still fails because the wallet has no native S to pay the transaction fee. The same happens if the wallet is connected to another EVM network: the address is familiar, the balance may be visible somewhere, but the transaction is being prepared for the wrong chain.
The check that prevents the wasted attempt
Before entering the trade, check three fields in the wallet:
- Network: Sonic mainnet.
- Chain ID: 146.
- Gas balance: native S, not only wrapped S or the token you intend to sell.
Then select the token contract from the app’s list rather than trusting a similarly named asset imported from a message, chart or old bookmark. On a routine trade, this takes less time than recovering from a failed approval or discovering that the balance belongs to a different deployment.
There is a second, quieter version of the same error. You hold enough S for gas, but put nearly all of it into the swap. The quote looks fine; the approval succeeds; the final transaction cannot be submitted because the wallet has nothing left for the next call. Leaving a small S buffer is usually the practical fix. Do not size that buffer from the token amount—size it from the number of transactions still ahead. An unfamiliar token may require approval first, then the swap, so one trade can mean two signatures.
For an ordinary swap, the safe sequence is simple: switch to Sonic, confirm native S, choose the token by its verified contract, review the route and minimum received, then sign. If the interface shows a balance but the wallet says insufficient gas, stop there. Do not buy more of the displayed token and do not unwrap or bridge at random; first confirm whether the visible balance is native S, wrapped S, or an asset on another network.
Once that check becomes automatic, the change to Sonic is mostly a wallet habit rather than a trading problem.