Brand setting draft not saving.

I am having this issue where i have tried vpn, ad blocker, new installation of browser and incognito mode to have my app info listed. i have listed other apps same way before now it wont let me through also having client permission been missing where i have already sett all to true.

At bottom i only receive error 400 is showing which mean request was not handled.

We typically see these types of errors be a temporary lapse in connection, either on the user end or our own. Are you still experiencing this issue?

this is the console log that page gave me every time. it is very annoying i tried warp(1.1.1.1) DNS and many VPN but no luck. also it is only for this project.