Someone else mentioned this problem yesterday or the day before. I don't know that it is related to the problem over the weekend because my hotspot didn't work then but the other device connected to it although there was no internet access. There was no contact the carrier notification. I don't know if the other case was resolved.
@Rict There was an issue with hot spot couple days ago . Maybe try and reboot the phone first . But you can use this direct link to support should try be needed
