???
- What are you showing us a picture of?
- I thought you just told me to disregard the the Xiaomi device - now your device is a Xiaomi!
- Please, can you use a normal computer, with a normal user OS, and attempt to connect to your router?
- Did you change ANY LAN settings on your OpenWrt device before this issue began?
- Have you attempted a reset of the OpenWrt ROUTER to defaults???
Also, it might be helpful if you told us this:
Is this still the problem you're experiencing?