one question, isn't LYN forum, Admin like goldfries for example are able to back-track the forumer login IP aprox. he/she from where (state/city)?

She is the middleman in this situation. She has some Standard Chartered Bank card that offers discount. So she use it to buy stuff at gemfive at a discounted price.

She's not the seller there.

but the server is able to trace the IP is from which state right even is running dynamic IP.

For example: https://whatismyipaddress.com/ (you click it, you see yourself, just like server)