you welcome @mk7z
and sorry for late replay
after you give it a temperary location it start brave as if that new folder is the base of the profile just give it empty folder then it would start as if it fresh copy
manytime it even fix the issue when you can not even start your default profile you can say the brave or any chrome based browser fix it self
so after you open brave with that way you close it again then start brave the normal way
here a post that this one worked with her
i see you follow up with Mattches so i think he will have better thoughts than mine so stick with him
and have a nice day both of you 