Calm down bro, it's clearly a scam, when I was still scouting out a pad I emailed him and he wanted 4.5k in advance before I had even seen the place, and when I asked him for a pay by week option he said no he wants it all now, then offered to send me the invoice right then and there.
1. Who wants to let someone live in their place without even meeting them?
2. Who expects someone to pay all the rent for a season in advance
3. Super untraceable foreign email
And if you read this sir, you are indeed a fuckwit
And I hope nobody ever falls for your scam
Get a real job