I have sent my BTC to the address 3Q2aKEGFTKDw3hghsBifXp39CZVMtZukxn about a year ago at the ICO.
How can I get my XEL now? Should I need to wait for mainnet launch? Any instructions?
Wait for mainnet launch announcement to redeem ICO investments... as thread states - that could be a few days to months away.