Two accounts on same ip?

Hi guys, i read some forum posts and want to know it normally.

Here is allowed use two steam accounts on steamgifts?
I do not much use steamgifts and steam too, but i create account here, why not.. :) My account is 1 year old i never care about it.
My bro actively use this site with his account, creating giveaways and trading, sometimes i bump his threads or he bump mine, iam not much interested in this, i play Witcher from gog and sometimes trade some games here. (no i don't have 2 accounts, why yes, iam not big steam fan) :D (most of time i use his better pc, he is phone lover...(girls on messanger) :D :D
My bro tell me "i don't care, do what you want, its your account"...

So i want to know, here is any problem? Site mods care about it or i must inform them about this? Its over year and no problem with it. His account is 2+ years and mine 1 year+, so how?
If i must create ticket, what i must say inside?
Or shut up and continue? :D

Thanks a lot guys. And sorry for english here.