How did they get access to your account? Steam gives you a password for a reason.
HOW?

引用自 ZookZonn：

Someone else used my ID; I don't know if they used a cheating program.

Ahh yes, because it totally didn't cross your mind years ago about your ban.. Right? Nah, let's just ask about it 5 years later with that being the first thing that you've ever posted on that 10 year old account of "yours"...

Stop buying accounts already..

I hope it was an expensive lesson to learn not to buy Steam accounts.

引用自 ZookZonn：

Someone else used my ID

Even more reason for the ban to stay then.

So is right... is permanent.

引用自 ZookZonn：

Someone else used my ID; I don't know if they used a cheating program.

They did, or had the account linked to another one that cheated at the time though you would have likely noticed this within the past 7+ years. I'm assuming someone showed you this account, you bought it, they received payment and once you logged in and realized there was a ban came here to feign ignorance?

引用自 ZookZonn：

Someone else used my ID; I don't know if they used a cheating program.

so in other words the account is not yours and you bought it, got it. Vacbans are for cheating, and its irrelevant who used the account, the account was caught cheating, also bans gets checked and rechecked, so seeing the ban is 1935 days old, means it is correct and permanent, and cannot be appealed

Totally looks like a legitimate request years later out of the blue to ask now, right ?

https://psteamcommunity.yuanyoumao.com/profiles/76561198175435754/posthistory/

Only post ever from this account.

The "someone else" using this account's ID looks like you.