Thank you.
I saw on a video that there were two different addresses on the same mining software, is that for management ease (coins sent to two wallets) or because it uses different pool?
That would be a specific configuration issue for whatever mining software you are talking about. Likely its just different pools. It it VERY common to have a primary pool defined and one or two backup pools defined. Doing so protects you when the primary pool goes down (not that the major ones do very often), and allows you to continue to mine on one of the backups. When the primary comes back up, most mining software will switch you back to that primary.
ps. Ignore the scammer that replied, he/she/it will likely be banned soon.
Ok got it. thanks