I am not using web wallet much, unless I am in need of some quick money to cash. That's why I was having a little BTC to my coinbase wallet. Yesterday, when I sent ~0.06 BTC which I was holding there for a long time, they didn't send it instantly. They emailed me that it will be delayed since they need to check the transaction for some reason.
Your fund, you are giving power to others to control = web wallet = BANK
Stop using web wallet, get rid of being controlled by others.
Coinbase isn't a wallet which had been said earlier yet its an exchange which means you don't posses your wallets keys and that the risky part.
Knowing coinbase is heavily centralized and if they do find out some issues on your transaction then they would really have the power to make investigations
which causes delays.For you not to experience the same thing in the future then better not to opt-in with Coinbase yet there were lots of non custodial wallets as of this moment.