Li i believe you hv replaced the bad power supply miner is running fine for 5 hours by now.
If you say we hv to pick option 1 or 2 no other options i would say you are now ripping off people, 4.73 miners been online only 100 days and i spent appr 23 BTC for the miners you can figure out how much i gonna loss. Don't blame S7 or GFW all problems i hv were caused by your infrastructure issues, your grid power, your power supply.
Back in 2015 Umisoo sold their customer base to Bitmaintech and transferred all the hosted miners to Hashnest with 1:1 ratio, though it was not a fair trade at least they gave me a chance to sell off my hashrates on market at a reasonable price.
