Yes, you can. To make money with HashFrog, you must purchase the right mining contract by carefully selecting the duration and hash rate. The idea is to check ANTPOOL or any of the available mining pools for the existing network hash rate and make purchases when the same is a tad lower than average. You can even consider purchasing a mining contract when mining difficulty is on the lower side. That way, you can make money even with a lower hash rate. In addition to that, you make money on HashFrog using referrals, which give you withdrawable commission rebates.