Outpost isn't affiliated with Valve,
However, Outpost does block out most phishing websites on their website.

There are hundreds of new phishing websites being made everyday, by the time one gets taken down, five more arose. (inaccurate number, but you get the point)

If you however want to give it a go, best possible place to file a report would be Steam Support.

If you're still having the problem,

https://steamhost.cn/steamcommunity_com/groups/tf2outpost/discussions/0/558747922562007365/#c540742485382266453

If not, it means the API has been down, which is indeed a Steam-sided issue.

If the user hasn't been marked on SteamRep, you should be fine.

If someone attempted to scam you it's advised to submit a report,
Flaming a user on the forums is not tolerated no matter who they are or what they did.

https://steamhost.cn/steamcommunity_com/groups/tf2outpost/discussions/0/558747922562007365/#c540742485382239358

https://steamhost.cn/steamcommunity_com/groups/tf2outpost/discussions/0/558747922562007365/#c622954302094710836

Outpost or Steam?

Outpost doesn't store any type of passwords, it requires little access to your Steam account.

If you forgot your Steam password,
https://support.steampowered.com/kb_article.php?ref=4988-DHXV-7272

Hey Surs!

You'd have to appeal, the forums can't help you with this sadly.
https://steamhost.cn/steamcommunity_com/groups/tf2outpost/discussions/0/558747922562007365/#c540742485382216907

Originally posted by Shickzter ↯ #SaveTheBuds:

| steamname: Kitteh!
| steam3ID: [U:1:159268298]
| steamID32: STEAM_0:0:79634149
| steamID64: https://steamhost.cn/steamcommunity_com/profiles/76561198119534026
| customURL: https://steamhost.cn/steamcommunity_com/id/Kittehtehcet
| steamrep: http://steamrep.com/profiles/76561198119534026

There he is. He is banned on TF2OP. If I trade with him, will I be banned on TF2OP asell?

Seems like the user was banned for scripting on scrap.tf, this might of resulted in a temp trade ban leading to a ban on Outpost.

User also has no reports against them, so from the looks of it, it's fine, if you want to be extremely sure, i'd wait for an admin to respond.

From my understanding, trade probation is given dependent on the proof you provide in a report and the users past, taken directly from a Steam Support page,

"Upon receiving a trade ban your account gets placed into probation as well. Probationary status allows other users to determine if a user has committed scams in the past so they can make better decisions about whether or not they want to trade with previous scammers. Probationary status does not prevent users from trading."

As for if "it would be safe to trade with this user", we'd need their Steam ID to be sure, in this situation, all I could do is recommend to stay away from the user.

There's already a topic made,

https://steamhost.cn/steamcommunity_com/groups/tf2outpost/discussions/0/618457398980921416/