Yes, Sinch will show as an available connectivity partner in the drop down in the TCR portal, so you should be able to select Sinch as the DCA (Direct Connectivity Aggregator). Or if you are sharing using the API, you can use our DCA ID “SINCH”.
You also have the option to create your 10DLC campaigns using Sinch: Creating a new US 10DLC Campaign
If you face any issues or have any further questions, then please let us know.
How do we know if a campaign has run into problems? Is there a way to escalate issues? We submitted our first campaign a week ago and it still isn't showing in TCR as DCA-approved. We're under some time pressure, so it's difficult to feel like we're stuck in limbo.
You stated the campaign is already "DCA approved". If this is the case, you can go ahead and:
If the campaign is showing as pending in TCR, Sinch still needs to review and accept it first. There is a backlog right now of pending campaigns so this may be causing the delay.
If you still have issues please escalate to your Sinch account manager, or contact Sinch Support.