Routed AP not working - Oh those lost infos

I'm trying to get routed AP working on a TP-Link TL-WR1043N/ND v1 with OpenWrt 18.06.1, and I think I've done everything right, but it's still not working. I have followed the instructions on page but without succes.
It's just like it says on the last line on that page: Internet from the router works, internet from the wifi clients doesn't. If anyone knows what was in the firewall setting according to please let me know!