Raspberry Pi 4 working with Pi OS. Latest EEPROM. Country code set. Ethernet connects to my Linux notebook.
I downloaded OpenWrt Pi 4 64 bit today and put on a microSD card. OpenWrt boots with nice Linux messages on the screen. Ethernet connects. I can ping 192.168.1.1. Browsing 192.168.1.1 produced connection refused.
I tested with two different Web browsers. No other network connections. I experimented with several edits of the connection in the Linux notebook.
If so, @brada4's comment is the easy solution since Luci is not installed by default in snapshots. But, the other question is if you want/need to use snapshot...