I followed a guide to restrict access to the main gateway ip address (192.168.1.1) from the connected wifi clients (192.168.88.x).
I was able to make client isolation work, but i can't figure why i cant block access to the main gateway login page.
Here are some screenshots.
https://i.imgur.com/S3NjH27.png
https://i.imgur.com/gCyR4Yj.png
https://i.imgur.com/3bcamth.png
Thanks for any tips.