I am attempting to add users to my new blog. I use the add user section and get the same error message no matter how many times I delete and resend the invitation. The error message is "Whoops, you can't use an activation key you've created for someone else.". This is the same error message that anyone I have tried to add as a user, whether it a contributor, author, editor, etc. When I try and send them a link to even be a follower, the link in email does not work. I have emailed the support department at wordpress and haven't gotten a response. This is extremely frusterating!
The blog I need help with is yarnpapersisters.wordpress.com.