I'm trying to use Zoho Invoice to send invoices to customers. I am trying to import customers from my contact list from G Suite, but on the Zoho website it will not connect and only will show this error. I do not want to have to manually add dozens of contacts in Zoho so I would like to import them.

So far, my website's DNS name servers are hosted with Bluehost and the MX records are set for Google's Gmail servers; I have not configured any other DNS records besides that. In Google Admin, I have already added and Installed Zoho Invoice in my list of apps. On Zoho's end, it says my google profile is "active'. Link

I'm scratching my head here trying to see what's wrong and why it's not working. (I contacted support and have not yet heard back).