Funds are stuck even when the exchange rejected the transaction

I have tried exchanging USDC to BTC using Changelly and the Trade tab in my Trezor.

It says:
The transaction failed

Sorry, your transaction failed or was rejected. Your coins have not been exchanged.

But if I go to my account I can still see an unconfirmed tx. I have tried sending some USDC to another address and they are unconfirmed as well (and I can’t find the tx in ethscan).
Gas price is fine I guess.

Is it stuck?

I can’t find any tx, the exchange and the coins I have sent.

According to ethscan that wallet doesn’t have any pending tx.

Looks like a frontend issue, but funds are stuck in the trezor. I tried sending them with Metamask and everything went fine.