Please follow the below template, it will help us to help you!
Expected Behaviour:
I think I should be able to access my router
Actual Behaviour:
I cannot access the routers admin page with pi-hole running. If I disconnect pi-hole I can connect. But since I disabled dhcp server on my router and use the pi-hole dhcp, I cannot access my router either way.
No. I tried https://192.168.50.1 I get that message above. I also tried https://asus.router.com. I get the same result. I use https because I set up the router access that way.
This would indicate a problem in the router access web page, not in Pi-hole. When you curl directly from an IP, no DNS traffic goes to Pi-hole and the IP is loaded directly. If there is no response, that is because the router provided no response at that URL.
Connection Refused means the router saw the attempt and actively refused it. Could be a firewall or something on either the router or the Pi-hole but that would be something added by you.