You did, and that's the messed up part of it.  I totally agree with you that you should have received an e-mail from KuCoin about the delisting and that they should not be relying on customers logging into their accounts frequently enough to catch one of those alerts.  I sometimes don't log into an exchange for months at a time, and even if I did more frequently there's no guarantee I would notice an alert that a coin or token was going to be delisted. 

I'm also not sold on their decision to give holders 90 days to withdraw the token.  I don't like the idea of giving a deadline like that, which is something a legitimate stock brokerage would never do. 

I think KuCoin probably should have decided to sell the token at market value at the end of the deadline (for bitcoin or whatever else) and credited the customer's account instead of just keeping the token for themselves.  That would have been excellent customer service on their part and likely wouldn't have been a huge deal for them to do.

OP, thanks for starting this thread.  It's always good to hear how these exchanges are doing business and about some of the crap they pull to the detriment of their customers.