Changelly is known as one of the scammiest exchanges out there, however in this case it might have been due to the wallet you used that caused an issue. The data you provided indicates that you made the swap from Coinbase Smart Wallet. These “smart" wallets are really just smart contracts and many exchanges can only recognize transactions that come from a normal wallet. I had a similar problem when I tried to do a swap on Sideshift.ai using the Swift smart wallet from Trust Wallet. My transaction was not recognized initially and I had to contact customer service so it could be processed.
Yeah, if you want to make sure there are no smart contracts messing up your exchange, just send the funds to an empty MyEtherWallet first and then send them to the exchanger.
SwapZone is just an affiliate and doesn’t handle customer funds. You will have to contact Changelly directly, give them your order ID and explain that your transaction wasn’t detected because it came from a smart contract wallet. Smart wallets don’t affect the receiver so your funds are not lost, they are in Changelly’s deposit address where they can transfer them at any time.
I would say however that if SwapZone did not answer the OP's queries then they are not doing a good job providing their service, which is what an affiliate is supposed to do (bring new users).