I have contacted WP support themselves about this as this is a very serious problem.
A month ago twice I tried to follow a couple of blogs that had simply lost the .wordpress.com part and got a message from WP saying "I must give a valid email address". I used the email add I signed up with! and then used my other add and that still didn't work!
Now that I have upgraded myself, NO-ONE can now follow me either! My friend tried to subscribe and the same problem.
I have both the follow blog widget and the follow tab and I have followed every step WP has offered and have even contacted them.
Has anybody else had this problem? Or aware of it?
Can anyone help?
The blog I need help with is mybyeworld.com.