For reference this is iD mobile technical team statement:
“Thanks, technical team checked all the issue please see their response: We've investigated the issue with the OTP message you reported, and our findings indicate that it was blocked because it was sent through a
route that avoids essential fraud and charging controls. It's likely that the organization that issued the OTP is unaware of this issue, as
it's related to their messaging partner's routing.
We recommend that you share our investigation results with the organization that issued the OTP, so they can work with their messaging partners to resolve the issue. Please note that this incorrect routing may
be temporary and subject to change, so future attempts may be successful. However, if the issue persists, we suggest escalating it with the
originating organization to prevent further disruptions.”