I missed the Bittrex swap, too. For me the swap at
https://qtum.changelly.com/ worked out very well.
I could even provide a Bittrex deposit address. This way I don't miss any more deadlines without having to install a wallet.
Thank you so much for sharing that link I just completed my end of the swap process (sent changelly). Any idea how long will it take for them to send new tokens?