The APRS SMSGTE service was supposed to have gone down a month or two ago, but it has been working for me the entire time, at least when I message myself or my wife. I've chatted with others on others forums and other people have said it's not working for them.
I've looked at the raw data on SMSGTE and see some folks just messaging away. Others, self included, cannot register or send texts. Weird how it's being selective.
Hope they can sort out the legal stuff and restore the service.