Foremost, I advise you not to use Atomic wallet. Yes, it's noncustodial, but it's not open source. I don't know how you missed this during your research, but that wallet was compromised not so long ago and people lost their funds. The team behind the wallet has never had any plausible explanation on what happened.
Check this threads
1.
Atomic Wallet hacked! Get your funds out now!2.
Atomic Wallet compromised and not safe!3.
IS ATOMIC WALLET HACK OR SCAM? 🔴 Immediately Withdraw your Funds4.
A Non-Custodial wallet, Atomic Wallet, being compromisedI did research and decided on Atomic Wallet.
I want to transfer funds from my Bank of America account into Atomic Wallet.
However, there are 7 different USDCoins.
So I used the Help feature and ask which of the 7 should I use?
You can't transfer funds directly from the bank to a wallet. You first have to by crypto coins that you then transfer to a wallet. Use an exchange like Coinbase, kraken… make a deposit, buy your preferred coin and then transfer it to a better wallet.
If you have any question. Post it here. Members will help you out.
Is it normal for them to ask for my coin address?
I've read about all the scams going on. About how good hackers are.
And why do they need my coin address?
Asking for a coin address is OK. They can only watch your balance but can't withdraw anything. The only issue is privacy.
They probably asked for your coin address so that they know which blockchain/network you wanted to use