In chrome web app store:
Users can give authors suggestions, but do not get notified when authors reply.
Nor can users then reply back to authors.
They can only reply to themselves.
https://chrome.google.com/webstore/detail/advanced-page-language-sw/mhgjlbolkmcookadjpolimbddngjgbol/support?hl=en
P.S., one cannot find a better place to report this.