I have one of your older VPS-2 accounts. Is it the same for that?
cPanel provides 1 year signed certificates for the hostname (server) and then 90 day certificates for every eligible domain via AutoSSL (Sectigo) or Let's Encrypt.
The only way you wouldn't be eligible is if your VPS was using CentOS 6 (32-bit) with cPanel as cPanel would be stuck to version 11.56 which is before AutoSSL was fully utilized and available.
So is there any advantage to paying for the cheap DV SSLs you sell vs just using the free ones that cPanel is providing me? Or are they basically the same thing?