Exchanges make swapping one cryptocurrency for another quick and convenient. You can exchange assets directly without complex order books, with very low fees, and even without KYC, like on Swap No KYC. However, swaps can sometimes fail or encounter issues due to market conditions, fees, or platform limitations.
Table of Contents
- Insufficient Balance or Funds
- Price Slippage or Sudden Price Changes
- Unsupported Trading Pairs or Tokens
This guide covers the most common problems users face when swapping crypto and provides practical fixes based on official support resources and user experiences as of late 2025.
1. Insufficient Balance or Funds
Why it happens: You don’t have enough of the source cryptocurrency to cover the swap amount, plus network/gas fees (or platform service fees). Even a small shortfall (e.g., 0.001 ETH for gas) will cause failure.
How to fix:
- Double-check your wallet balance, including fees.
- Top up with a bit extra for gas/network costs.
- Try a smaller swap amount first to test.
- On no-KYC platforms, fees are often minimal. Still, always preview the full cost.
Here are some common error visuals you might see:
(These would show typical “insufficient funds” or “low balance” error screenshots from wallets/exchanges like MetaMask or DEX interfaces.)
2. Price Slippage or Sudden Price Changes
Why it happens: Crypto prices are volatile. The quoted rate at preview might change by confirmation time, causing the swap to fail if it exceeds the platform’s slippage tolerance (to protect you from bad rates). Common on DEXs during high volatility or low liquidity.
How to fix:
- Wait 60 seconds and retry. The market might stabilize.
- Increase slippage tolerance slightly (e.g., from 0.5% to 1-3%) in settings, but use caution to avoid worse rates.
- Use “floating rate” options if available (instead of fixed).
- Swap during lower-volatility periods or smaller amounts.
A typical slippage warning screenshot:
(This would display a red/yellow slippage alert popup common on platforms like Uniswap or similar DEXs.)
3. Unsupported Trading Pair or Token
Why it happens: Not all platforms support every token pair, especially obscure or new tokens, due to liquidity, listing, or technical reasons.
How to fix:
- Check the platform’s supported pairs list before attempting.
- Break the swap into steps (e.g., Token A to USDT to Token B).
- Switch to a more flexible No-KYC exchange like Swap No KYC, which supports a wide range of assets and instant swaps.
- Verify token contracts and avoid scams.
Example of an unsupported pair or liquidity error:
(This would show an error message like “Pair not supported” or “Insufficient liquidity” on exchange interfaces.)
Pro Tips from Swap No KYC Always preview swaps carefully, use hardware wallets for security, and start small when testing new pairs. Platforms like Swap No KYC minimize these issues with aggregated liquidity, low fees, and no KYC, making troubleshooting easier for privacy-focused traders.
If you’re hitting these errors frequently, Swap No KYC is here to help with seamless, private swaps!