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.
Why dont you use Electrum, it is well suited for a small number of Satoshis.
Moreover, you manage your wallet, you do not need to download gigabytes of blockchain and it is portable, it works on a computer and on a phone (android).
The intention is to give awareness that business like this always have the rights to review your account if they've seen some uncommon movements.
There's nothing anyone can do about that, maybe there's a site rules or updates in terms of withdrawing or securities seen malicious changes from your wallet, whatever reason they have ins their minds, it's always best to have your own wallets where you are holding private keys so you can deal
anytime without any interruptions coming from any third party service.