Brave does not save settings, how to fix?

Question

Browsers

About a month or two ago, I used the Brave browser as usual, but suddenly one setting went wrong. I tried to set it back up and save it, but I couldn't. Tried everything: restarted the browser, rebooted the device, tried to save the changes a bunch of times. Now it's very uncomfortable without her. The setting is called: "Grouping tabs". How to fix it?