Coinbase seems to be lacking support, the limits are really crushing, their website glitches out a fair amount and when it goes under.. it's rough. I don't think there's any perfect exchange, but I'd have multiple on your mind as trusting one isn't exactly the safest thing to do. Coinbase is known to have many issues and this is just a laughing matter now.. they really don't care about their customers. They should take Amazon as an example, not Comcast.
▶▶▶ Coinbase reddit:
https://www.reddit.com/r/CoinBase/