Our team uses Google-managed SSL certificates and these are applied to the login portals; Business App, Sales & Success Center, and Partner Center.
Outside of that, we don't currently auto-uplift those certificates in the individual apps such as Reputation Management and Listing Builder as they would be behind those login portals, but that is something our development team is looking into changing in the future.
However, on a case-by-case basis, the Technical Team can assist with securing the URL to uplift to HTTPS using Postman. Please reach out to Support on Demand (support@vendasta.com).