This issue is resolved now.

Note: If your account was switched to a different carrier, please continue to work with support team in case of any trouble.

Cause of the Issue:

It came to our attention that one of the accounts using our services was sending misleading and unsolicited texts. This is a violation of our terms of service and the offending account has been suspended. Unfortunately, this incident has impacted our partner carrier poorly.

As a result, services have been disrupted for some of our customers. Please visit https://callhub.io/callhub-outage-aug2020/ for more details.

Resolution:

We are moving affected accounts to a different carrier on request. If you want us to move your account, please reach out to our support team at support@callhub.io and we will get started immediately.

Below article contains the detailed instructions to resolve the issue
https://support.callhub.io/hc/en-us/articles/900002213163-CallHub-Outage-steps-to-resolve

We are continuing to investigate this issue.

CallHub Voice & SMS services impacted across all geographies, due to issues with our telecom carriers. We're working with them on resolving these issues. We will keep you posted on the updates. If you have any queries please do send them to support@callhub.io.