This is just heads up for those that are have accounts with them. I have a myglobaltalk account that I sometimes use for forwarding to my international sim when I travel. However, as of yesterday, I can no longer log into the account. The same is being reported about voicestick.
[VoiceStick] Head's up. - dslreports.com
Phones: Xiaomi Mi Mix 2, Samsung Galaxy A50, ASUS zenfone 3,
Sim cards: AT&T (Contract), 3 UK, Piranha Mobile