
5 days
I think there is some confusion because I have had more than 4 domains at one time and they did not complain about it. 2 of them were wildcards. Possibly a “90 day certificate” is something specific that they are offering?

I think there is some confusion because I have had more than 4 domains at one time and they did not complain about it. 2 of them were wildcards. Possibly a “90 day certificate” is something specific that they are offering?

What? I’m not paying a dime and I’m not manually inserting certificates.

I’ve been using ZeroSSL for over 5 years and can attest that they are friendly in that I have literally never seen or heard from them.
I’ve set up and cancelled multiple domains in this time, and have had one domain running for the entirety of my time with ZeroSSL.
I don’t think you (OP) are gonna find much better than a for-profit business with a good track record if you’re unwilling to use Letsencrypt.
I don’t know when they get renewed, it’s automatic, but it’s definitely free.