What is the point of the mandatory wait time between purchasing coins and having them deposited in your wallet on Coinbase?


Friday, I tried to buy ETH from Coinbase. they approve transaction, took the money from my account, and then today I received an email saying the transaction was cancelled, and I should get a refund deposit in 3 business days. I don’t understand how they can just cancel a transaction after taking my money from the bank. This feels pretty sketchy to me.