Don't worry, you can follow our exporting xpub from crypto wallets guide to get around this. Please note that Coinbase Wallet does not have an xpub for BTC. Signing into Clicking the Statements button in the top-right corner Selecting which monthly statement you want to view Monthly statements will become available within 5 business days of month end.
After that, simply add the public key or public address for each of your coins and let Koinly handle the rest. However, if you tap in to the currency you sent from the Coins tab and then tap into the transaction in question, there should be an option to view your transaction on its respective block explorer.