Another "collector" has appeared. Most likely a scammer.

I'll explain how they work.

Such situations appear from time to time, this is not uncommon (spam bot, scammer).
1) They write a very flattering message. They become friends with you.
2) They ask you to switch to personal messages.
3) In private messages, they ask you to provide your personal email or promise you that they will buy your drawings (for a lot of money)
4) They send you a link by email and you lose everything.
5) Or they ask you to switch to SMS services (supposedly for better communication) and promise that they will buy your drawings. To do this, you need to go to the website and register. And you lose everything.
The final situation for you is the same: “You lose everything”
I hope I wrote this in detail.