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Yeah I see 9 and a black lady, does that count?
The Twitter X might contain a backslash character?
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10 sats \ 6 replies \ @jasonb 14h
One of the dots in the middle of the QR is cut off by one last hard-to-see underscore
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Ahh
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50 sats \ 4 replies \ @Scroogey 13h
Reading those from top to bottom and adding them to the address (URL) gives
Clicking on the treasure box downloads a Keepass database file.
The text hints at secrets from the first three free lessons.
The secret from lesson one is abstract (see comment in this post).
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0 sats \ 3 replies \ @jasonb 12h
So it looks like your original guess about needing to do the lessons was right then.
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0 sats \ 2 replies \ @jasonb 12h
Oh wait, a DIFFERENT puzzle. This is deep.