HubSpot recently started to filter form submits and labelling them as spam when coming from unknown sources. If you can not see REA and Domain contacts being created please follow the following steps to release the form submissions.
You will need to add the following domain re-syncer.com to your tracked domains. Once you have done this all the form submissions will be automatically released.
And that's it. All the existing form submits from Re-Syncer will be released and be visible on contacts.