@wade8421 you're not alone, from our experience there is no flexibility.
This has been handled very badly by Flowroute, we previously contacted them some time ago based on a post from the 3CX blog about 10DLC requirements and since all our systems are low volume, they said that we were exempt, even systems that we have for families for their homes to avoid using their cell phones.
Then the emails came a week or so before shutdown of outbound on 4/17, we went through the process to setup a campaign right away, no response until 4/17/2024 the day of their blockage, not much time to fix if something was askew and there were things we needed to address like statements and verbiage which all could have been avoided by better clarity to their vetting process.
For the family systems that are not business they want them to register for an ein from the government which is crazy as a tp id should be fine to validate the account since it's for personal communications. It works when you get a cell phone. We use it so that our home phone can get sms and not our cells as we like group sms through 3CX for things like package delivery.
We get that this may be driven by T-Moble as Flowroute has suggested but staff up and do not send out email stating that no one will be working on this over the weekend...
This problem required a ramp up in staff and 24/7 support till the issues are mitigated and clearer directions through the process.
We still have clients that have not had a response.
Other providers do not seem to have the same urgency which is odd.
We are all for kicking phone spam to the curb, but this was a bad way to achieve it.