Oh snap... I just realised you said the * was at the end of the "pass"!   I'm an idiot!

Can you explain me if this i good or bad 

It likely is a Base64 representation of some encoded text... I was experimenting here: https://encode-decode.com/blowfish-encrypt-online/

and discovered that with a 12 character password ("password1234"), there are several encryption algorithms like Blowfish, des, cast etc that return 76 character encrypted text when you encrypt a private key.

ie. Blowfish:




Now, I DO NOT recommend that you go an put your cipher text and password into some random encoder/decoder website like this... but it might be worth seeing if you can find some reputable encryption tools that you can use to try testing various encryption algorithms with your cipher text+password.

what are the exact first 4 characters and the exact last 4 characters of your "text"? I've been trying to figure out what format it is in... and I'm wondering if there is more to this that we realise from your description.

Again, obviously, don't post the whole thing as it is apparently only protected by a 12 character password

Any chance you can still reach the guy who sold you the coins?

Did you import the private key into Bitcoin Core (bitcoin-qt)?
I'm not sure if pywallet can do this, it could be. But it sounds like you've used bitcoinadress.org to create a private key. Maybe you're holding a brainwallet.

The "+" sounds like a signed message, but that would be 88 characters. Does it end on "="?

Example of a signature:
76+12=88! Coincidence?

As far as I know you can't create a wallet.dat file from text. It could be your password works on that wallet.dat, but in that case you definitely need to find the file.

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Please edit your posts instead of making multiple posts in a row (see forum rules).

The text has 76 signs. Starts with AAQ and has + sign. Also has upper and lower case and numbers and 12 charecters pass.

Maybe this was some kind of scam but I can not leave potential BTC left.

I have hope until I run out of options or see that balance is 0

Maybe the lenght of this "text", the first character, the last character and potentially some description of the character set might be usefull (for example, only capital letters, alphanumeric,...).
Don't post the rest of the "text" tough, don't give it using a PM either... In case your seller used a weak encryption scheme, sharing the "text" might lead to loss of funds...

I'm not sure if anybody will be able to help you, but the description "some text" defenatly isn't enough...

I'm not sure I get this. Have you received the text + password from the person who sold you the bitcoins? Does that mean that he has them as well?

This is quite vague
Does it match any of the descriptions on [overview] Recover Bitcoin from any old storage format?

If you're lucky, it's just BIP38 encrypted:

Warning: Don't enter your "text" on any online website, and don't trust any PM-offers to "help" you!