You can get the limit increased by following their instructions. It works, and didn’t take much time. They could be busier now though.
Oh without a doubt they're going to be busier now, Coinbase does seem as well to be understaffed and not ready for this sort of thing so I'd expect to wait for sometime to be able to get an insane amount of money.
But the reason they do is is to protect themselves, as they're going to following the government's orders when it comes to large sums of money like this. Though if you do message them, they're a very nice support team and they'll get to you -- even if it does take sometime.