My account is 4 years old, was verified, 2FA setup, and bought/sold without issue 4 years ago.

Recently logged in to find that previously verified ID documents were somehow wiped out and my account became restricted. Reverified ID without issue, but account still restricted. Been 13 days and nada from their support save for an automated response.

My account is over 3 months old. They took my money and successfully gave me my tiny bit of ETH and BTC, but for some reason my litecoin transaction is stuck in the ether.

That's annoying then, maybe the run up in LTC triggered a new tier of verification or they really are that far behind. I'm sure you'll get it eventually but if you're looking to flip it now you can't yet.

If you're not buying with the intent to hold, I recommend depositing USD to their exchange GDAX. Fees are lower and you can sell/withdraw immediately.

So? Services that operate on money shouldn't just have an SLA where is works fine for some people. When you want a lot of nines, "it worked for me a few times" is not enough.

Probably should be completing AML/KYC checks before funding the account, but funny how there's never any issue with that not happening in a speedy amount of time...