I just tried signing in on the Canadian site -- no luck leaving
feedback. I then signed in on both DuckDuckGo and private windows in
Brave and Firefox; the first allows no add-ons and saves nothing to a
cache. Nothing worked.
I tried four different browsers including DuckDuckGo which doesn't save
anything to a cache, but not another device as I don't have one. I
filled out all required and optional fields and had no way to leave a
comment -- something I wanted to do.