Feature Request Summary: 

In the future, we hope to be able to configure paid and free certificates under different brands so that they can coexist.

Description/Use Cases: 

If a brand is added before the server certificate is renewed, the tedious process of issuing the certificate must be repeated again, apart from the renewal.
This is intolerable.

If certificates for added brands could be set up free of charge until the next renewal, it would save time and ensure security in the meantime.

We hope to coexist in that sense.

Business impact of limitation or missing feature:

I am not a server engineer, so I know this idea is not easy.
I can also imagine that different issuers of server certificates may have different responses.

I know this is a rare case, but I hope you will consider this request.

Thanks.