yes you can mining use qt wallet and you must have balance to PoS mining
as far i know for PoW already ended at block 22000, you can check the explorer
at bloc 22001 PoS mining started
https://www.regalcoin.info/block/dbcffd9530dc79119fe789f703c5e48e7db120da83c12892c587ed96ebc1d81f

im just a crypto holic
not a dev, not a leader ,promotor or supporter
and i already make some profit in regalcoin

good luck