That's true. Autossl use letsencrypt API v1, hense it's not supported for wildcard.
Also, I'm not sure why you use Apache plugin for certbot.
Since let's encrypt wildcard certificate use DNS-01 validation, and it has nothing to do with Apache.. (cPanel doesn't allow install the certificate from command line)
Can you try just run sudo ./certbor-auto certonly
or manual
if you don't have DNS API setup. (Automation)
Just a P.S. (maybe a fancy advertisement..), I remember someone in our forum developed a plugin called fleetssl, which support let's encrypt V2. You might want to check that out.. (to save you from entering command line, pass validation, grab certificate etc...)
https://letsencrypt-for-cpanel.com/pricing
This might be able to resolve your "apachectl is not working" error.
Thank you