I sold all my altcoins on Bittrex by choosing "auto-sell". A few days later I bought some altcoins again. I checked and saw that, right after I bought the altcoins, Bittrex immediately sold off all of them. I had done "auto-sell" for the first set of altcoins because I could not find any other way of selling my altcoins.

Two questions:

1) How do I prevent Bittrex from selling my altcoins automatically? I don't see the "auto-sell" option any more.

2) How do I buy altcoins again on Bittrex in the new interface? I don't see a way.

Thanks.