Draytek Vigor to Fritzbox VPN Setup

looking for a network engineer that has good knowledge of a draytek vigor and fritzbox, i want to setup a site 2 site vpn however they are not communicating with each other. Most likely an encryption thing between the 2 of them
Your task is guide me remotely through this and u get paid, its a short task but no need for any remote work just by chat with screenshots.