Bob, I had problems getting on but was finally able to sign up yesterday. Every userid I chose, it was telling me had already been taken. Finally I just entered a long (maybe 20 characters?) string of random characters and it took it. Once you’re in, it allows you to define your screen name differently.
I will try again tomorrow; it would be pointless from this tablet. Did the index page say it was accepting new applications or did you try something different?
I tried yesterday but new applications were blocked. 😡