That other user doesn't have the contact details for this "Bitsave"... they were just offering general advice for how to recover your account. However, if the website is closed as you said, then you won't be able to email them anyway as the entire domain is likely long gone.

What are the names of the 2 files in your "Bitsave" folder?

The first thing to do is write the most detailed and correct letter to the technical support of the service that provided you with the wallet and generated the key. Then, having already received an answer from them, it is worth following the instructions and not inventing some incomprehensible ways to solve the problem. Most often, technical support goes to a meeting in such situations. I myself lost my key, but thanks to normal communication with technical support and providing all the information that was asked of me, I got access to the wallet again. Everything is real, but without haste and panic.

How exactly did you "invest"? Do you just remember "buying some BTC" or something?

The point of my line of questioning is trying to figure out what wallet you might have used... or where you might have bought the BTC from so that you can figure out exactly what these 32 characters are... and whether or not the 2 sets of 32 characters need to be put together to make a 64 character HEX private key... or if they're something else entirely.

Without knowing exactly how you got the BTC, or where you had stored it... these 32 hex characters may have nothing at all to do with BTC...

So, where exactly did you find these 32 characters? were they written down on paper? where they in an email? are they marked as "BTC Key" or with some other notes to indicate that they're actually related to Bitcoin? Or did you just find 32 random hex characters somewhere and you just believe that they're related to Bitcoin because you "invested in 2010 2011"?

How exactly did you "invest"? Do you just remember "buying some BTC" or something?

The point of my line of questioning is trying to figure out what wallet you might have used... or where you might have bought the BTC from so that you can figure out exactly what these 32 characters are... and whether or not the 2 sets of 32 characters need to be put together to make a 64 character HEX private key... or if they're something else entirely.

Without knowing exactly how you got the BTC, or where you had stored it... these 32 hex characters may have nothing at all to do with BTC...

So, where exactly did you find these 32 characters? were they written down on paper? where they in an email? are they marked as "BTC Key" or with some other notes to indicate that they're actually related to Bitcoin? Or did you just find 32 random hex characters somewhere and you just believe that they're related to Bitcoin because you "invested in 2010 2011"?

Did you mean it does not work while you use bitaddress offline? Because the hexadecimal private key with you will need to be converted to WIF, when wanted to convert it, it does not work? Or you are importing the hexadecimal directly?

If it did not work while converting it to WIF using bitaddress, that means it is not a valid private key.

According to what OP posted already, he had two different 32 characters that are in hexadecimal. So, if taken together, it will be 64 characters, which could be a hexadecimal private key. I think OP should have tried that out, run bitaddress offline to generate the WIF to know if it will work.

What makes you think that this is a Bitcoin Private key?

Was it written on a piece of paper (or in a text document etc) labelled "Bitcoin Private Key" or something similar (like a paper wallet printout etc)? Or was it just 32 hex characters that you had noted down somewhere? Are there any notes or indications as to what software/system these 32 characters came from?

If you can identify where these 32 hex characters from, you might have a better chance of figuring out how it leads to a private key.

There's this:

If the characters are all 0-9 and A-F, it's hexadecimal. If that's the case: could it be you're holding half the key?
If I enter 917b917b917b917b917b917b917b917b917b917b917b917b917b917b917b917b in Bitaddress.org's Wallet Details tab, it produces a valid private key. But that's 64 characters.

Sometime I look at the name "Satoshi" as a ploy to divert our attention from reviewing the great minds behind  Bitcoin. Though i don't  want to limit my mind, but i wonder how one man could make such a desruptive invention as Bitcoin. And remain anonymous for years without any sign of reviewing himself in the future

I think the government doesn't even know who Satoshi is, because when Bitcoin was created, it was completely decentralized and Satoshi probably doesn't know.

I actually think the government will embrace Satoshi as a partner to develop a new version of Bitcoin-Blockchain and make the government able to control half of the market circulation, and not just limited to a stable coin game.

many will claim to be satoshi, and may be more valid than craig wright. I think the government will also include him in the top secret category if it is finally found by the state intelligence agency because it is considered as a revolutionary figure who has potential to change the world economic system quickly.

but it has been proven that that one is a dummy and has nothing to do being Satoshi.

how was that?is that something that will help the market?
seems like you really blamed US for all of this?anyway there is nothing we can change but to go with the flow.

It's funny how some dummies like Craig Wright think it's a good idea to claim they're Satoshi.