Request Response SMS not going out to all Members

[dirtroad319]

When doing a call out, we typically send the call out message, followed immediately by the Request Response message.  This has been working well and reliably until recently.  Now, all users selected still get the Text Message sent via SMS, but some users are not getting the Request Response Link message.  The difference is not tied to Cell Carrier.  Is this a known issue or is there a fix?
  Thanks,
Dirtroad319

[Support]

Thanks for reaching out with the report. We do seem to be having an issue with that feature, though it is somewhat unclear what the problem is. The Request Response message is sent out just the same way as a text message, so we need to dig into the difference. We will report back.