I can not understand why you need these wallets? You can continue to use Meta Mask and be sure that your funds will remain safe as it has long established itself. Why start to use what is still unfinished to the end and can endure some changes?
You are misunderstanding the problem, man.
He's talking about MetaHash, you can learn more about it here:
https://medium.com/bountyportals/how-to-forge-delegate-mhc-coins-at-metagate-wallet-2b6d0eea47e6You can earn $ 2.5 per day from MHC.
More importantly, see what @irfan_pak10 says above.
It's not possible to get multiple rewards by running multiple metagate wallets on one PC.