I tried to install forum watch add on. I extract the file and upload it to server. Then try browse the .xml file from 'Install from Uploaded File'.
But i have the error 'The files associated with this add-on could not be found. Please upload them and try again.'
We found for all the user that register using the gmail account had the awaiting email confirmation status.
When we confirm to them, they said they didn't received any email confirmation.