Dr. McKay

client.on('error', function(e) {         console.log(e);     });  

No, sadly that's not possible.
There are some browser extensions out there that will make this work with a single item only, by appending &for_item=appid_contextid_assetid (like for_item=730_2_123456789) but that's only if the user has one of those extensions installed, and isn't using the Steam client.

Here is where that plugin came from: https://forums.alliedmods.net/showthread.php?p=1850358
There are only a select few commands that the server can force the client to execute, and quit is not one of them. In fact, that plugin doesn't actually support running client-side commands, it only supports "fake" client commands. Meaning, it makes the server think that the client ran a command. So it's only going to work on commands that run server-side, like "kill".

Your fix is correct; you must log into steam-user with your password to get a login key.

err.type is not a property that exists. You should check the text of the error message to see what caused the error.

Sounds like you're looking for the cancelTime constructor option.

Yes, the packageList argument in the callback contains the package IDs and names.

That should work, I think. You may need to enable web compatibility mode on steam-user to force it to connect using WebSockets. When you connect via WS, the CM domain name follows the format *.cm.steampowered.com so that should be fine with your proxy setup.
I'm sorry, I can't recommend any proxy providers.

I guess there must be something wrong with the way you're getting your item IDs, then.
Edit: Actually, possibly that recipe might be one of the ones that Valve banned bots from using after the geel incident. I'm not sure why one would consider a weapon to be "high-value", but you never know with Valve. Can you craft those 3 items in-game?

try do 1 second delay (1000 ms) between requests

Well, it looks like you're logging off in your matchList callback, and if you aren't logged on you can't talk to the GC.

The hidden one is the correct one. The visible one is used as a decoy to throw off dumb users who fell for scam sites back in the day that prompted them to upload their sentry files. It always contains the same content.
The numbers don't really have any meaning. Steam does keep a reference to the correct sentry file in config/config.vdf under InstallConfigStore>Software>Valve>Steam>SentryFile, but if you only have one hidden sentry file then that's the correct one.

Do you have Steam Guard enabled? If you do, then I really don't know what the issue could be. Family Sharing support is experimental and I've not done too much testing with it.

Ah, i was not aware that steam guard must be enabled to activate Family Sharing.
I enabled Email Guard, and it works fine now.
I did not think about this because the AccountNotFound code was throwing me off.
Thanks for the Answer! ~solved

Sorry, I really don't have any plans to do anything with Dota.

14000000D81B906BE8187273F69B60320100100105DE505F180000000100000002000000D62F504A883AAB9D8B8A130001000000 is the hexadecimal representation of the ticket. You CRC32 the binary, not the hex.

Steam changed how wallet codes are redeemed. GitHub issue here.
I will fix this as soon as I can, hopefully in the next day or two.

Huge facepalm right there, I even remember reading about it on the docs. Thanks, that's it, I never initiated anything to trigger the event.

No.

You mean an Array with just one Obj? Yes I've tried it.. Also "InvalidParam" error.

Example Array: [ { server_timestamp: 2020-08-13T01:21:28.000Z, ordinal: 0 } ]
Nevermind.. seems like a Steam issue... getChatMessageHistory adding empty messages between and when you try to delete this invisible steam messages, you will receive that error.

I just optimized the filter now: 
response.messages.filter((x) => !x.deleted && x.message !== '')

Assuming we're talking about Valve games and games using Steam Inventory Service (which is not all games on Steam), asset IDs change when:
The item is traded The item is modified (e.g. painted in TF2, renamed in TF2/CSGO) The item is attempted to be traded but the trade fails and is rolled back There are probably also a few other weird cases where an asset ID changes because this is Valve we're talking about.

Assuming we're talking about Valve games and games using Steam Inventory Service (which is not all games on Steam), asset IDs change when:
The item is traded The item is modified (e.g. painted in TF2, renamed in TF2/CSGO) The item is attempted to be traded but the trade fails and is rolled back There are probably also a few other weird cases where an asset ID changes because this is Valve we're talking about.

I am currently using v.12.16.3

I already got the issue fixed though, like you said it was an issue with me Importing TradeOffer. I removed all my code with that import and it started working again.

Thanks alot!

My mistake; you pass the request into the SteamCommunity constructor, then pass that SteamCommunity instance to the TradeOfferManager constructor as the community property.

Yes, you won't really be able to run more than 10-15 bots on a single IP. You'll need to use proxies or multiple IPs on your machines. You can have steam-tradeoffer-manager use a proxy by setting a request instance with a proxy set using request.defaults to the TradeOfferManager constructor.