No Internet connection

Hello people,
I try to setup my MikroTik routerboard as a Wireless router in my Home-network. My topology looks like: UPC → TPLinkRouter → (HomeNetwork) → Routerboard. So I tried to use NAT to translate ip’s between my home network and my wireless network. I’ve setuped everything (Ip from routerboard in home network , subnet ) on “Quick set” and I also made a static route from my tplink router to my wireless network. But it doesnt matter what I am trying I just cant access the Internet. Does anyone of you know what I could have done wrong ? I would appreciate your help.
Regards,
Lukas