Pinecone doesn't have your banking info .It's all handle thru Wallet the company they hired to do the transactions. I actually did it and it went very smoothly.My credit Union is very good about processing transactions like this - if they think something is not on the up and up they will not process the request.Knock on wood but I haven't had any problems with any companies that I do transfers with.
BTW- The company is owned by Whapps LLC and was founded in 2002 which I believe is Apple Wallet- I do have the app on my phone which I never signed up for .If I'm wrong please let me know.With that being said I would never purchase a product online with my debit card - now the company you are doing business with online could possibly wipe out your account.Always use a credit card online to protect yourself.