Quick question for everyone, hope this is the appropriate thread.

Booked on Z fare IAD to BLR a few days ago, first leg on UA, second on LH. With the weather the first flight was cancelled, but I was able to call UA and get the first flight moved over to an IAD-FRA flight on LH. Because business was full, UA moved me to an economy seat on the first LH flight (regular Y not Premium Y, although that was available). Second leg FRA-BLR on LH was in business as booked.

What am I eligible for in terms of compensation or refunds?

Thx