Please transfer your money back under your control. That's the whole point of bitcoin. You won't be able to do this when problems happen.

I mean, if it's only a few hundred dollars in BTC, it doesn't matter much. But it's a terrible feeling to lose way more than that.

Here's a recap of Coinbase's problems over the years, in case it matters: https://news.ycombinator.com/item?id=8947926