I think the main issues are these:
1. Skrill is a reversible and high risk payment method. It is similar to PayPal. This means you can dispute the payment after you get the coins and have the $3918 charged back.
2. USD 3918 is a large amount of money. With your account opened just a month ago, a reversible payment method is seen as a red flag. It makes people nervous.
Why don't you use Paxful?
https://paxful.com/buy-bitcoin/skrillor BitPanda:
https://www.bitpanda.com/trades/buyor he can widraw those funds from Skrill to bank account or visa then buy btc is more easy for big amount that way