Thing is i use a Quick access wallet online
https://wallet.mymonero.com/So how am i suppose to update an online wallet ?? Shouldnt the online wallet been updated by its self? The issue is as you mention probobly with the big update..
It's not you who has to update, obviously; it's the website owner who has to update. But being the most known (imho) online service for Monero wallet, I'd expect they did and the exchange didn't. However, as I said, ask the support. Ask the support of MyMonero; ask the support of the exchange.