I can't leave a broken chain

I made a sync chain on my pc and agree my android, but the mobile never used it (not depossited any BAT from ads) . I try to out but the name of my pc dissapair (in the brave (android) configuration). If I"click" on “leave this device” not leave me out. also print in the screen than my pc have an incorrect date. please help.!

EDIT: if I touch in the end of the square in black space repeatedly, sometimes recognised the touch and ask me if I want to delete the device (PC) but no delete nothing, also If I touch on “leave this device” SOUNDS LIKE A TOUCH but doesn’t leave the chain