We did not had any such message but when we checked GC key we had our Pre-Arrival. Have you checked your GC key and if you are using a Immigration Rep then they might have received an email too.I got this message in my online tool and my status is application received to in process
We sent you correspondence on October 5, 2020. If you have not yet provided the information or the requested documents, please do so as soon as possible. Please wait until you receive the correspondence before sending us additional information, as the correspondence will outline all information that is required.