Somebody sends you USDC on a chain where you have never held anything. Every ordinary route now asks you to acquire that chain's coin first — through a bridge you also cannot pay for. It is the most common dead end in self-custody, and it has nothing to do with how much money you have.
For supported pairs, the wallet signs the trade instead. A relayer submits it and takes its fee from the trade itself, so nothing has to be paid in advance.
What it costs
More than the ordinary route, always. That is why the wallet never presents it as a better price and never ranks it against the normal one: it is not a cheaper way to trade, it is the only way to trade when you cannot pay gas.
What to expect on screen
You may be asked for two signatures rather than one — an approval and the trade — and only one after the first time, when the token is already approved. Signing is not spending: nothing moves until the relayer submits, and the quote shows what lands before you confirm.
Not every chain and pair is supported. When it is not available, the ordinary route and its fee are what remain.
What the app shows
- “Balance is too low to cover the network fee.”
Related
Still stuck?
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One rule
Support will never ask for your recovery phrase, private key or password, and never messages you first. Anyone who does is not us — whatever address, avatar or logo they use.