I have a RB5009UG+S+ with RouterOS v7.6 which is getting its IP through PPPoE from the ISP. Behind it I have an UNRAID server running a Nextcloud docker. I'm using "Nginx proxy manager" to forward the ports to Nextcloud while using Let's Encrypt certificates and DDNS straight on UNRAID server. I opened the port 443 for this on the router and Nextcloud is accessible from outside the network but I can't access it on the same address from the LAN. From LAN I can only access it with it's IP address and local port. This used to work when I had ASUS router with the same port forwarding. So I can only asume it's a bad firewall config.
Example: https://aaa.noip.com is accessible from the internet but not from LAN. NAT rules on Mikrotik are quite difficult for beginners and I spent a few sleepless nights already playing with them, to figure them out. Can you please help me gain access from LAN to this address?