Most of my business communications are via text. Most are through the desktop app but the mobile app doesn't work either. I just discovered that outbound texts are not being delivered to people with AT&T phones. I get no indication on my end that the text did not go through--everything looks normal and my texts are added to the conversation string. I can receive texts and calls from those with AT&T phones. It's caused a huge mess today as several schedules that should have been set up were not received and I wasn't aware of the issue until we called to discuss another matter.
What can I do to resolve this issue? I've called tech support and they say the AT&T test worked properly but I've tested this with at least 8 employees who have ATT&T phones and none are receiving my texts, nor are the clients who I mentioned earlier.