Hi JJbucketlisttravelle
Did you get this sorted out?
I just had the same issue fixed.
My issue was exactly the same as yours and my site is also hosted at Bluehost.
The weird thing is that I have 2 sites hosted on Bluehost with the exact same settings - it seemed - but one worked fine and the other returned 403 in Google Search Console just like yours.
So I compared all settings to see if anything was different.
If the cause of your is you is the same as mine you can fix it like this:
Find your site in Ezoic.
Go to “Settings” and scroll down to DNS settings.
I had an A-record set to the wrong IP-Address.
Check all your A-records (except for name:localhost) to see if any of them are not the IP-address of your host.
In my case I just had to change the A-record with name “@” to {redacted}
and shortly after the change I did a livetest in Search Console and everything is now perfectly fine 
Let me know if this works for you.