All process in browser( include CSR ) that do not need any other software to install on your server.
The client can be support both acme v1 and v2 automatically!
How to use?
First register with email, and create a domain for issue certificate.
Then create certificate:
Some users can not download after generating ACMEv2 wildcard SSL certificate. Currently, this problem has also been fixed. Click Generate or Update and click the link in the picture below to download (ACMEv2 wildcard certificate only).
if the user not pay, the system can generate the private key for the first cert;
if the user have paied and has some reset service, user can create private-key himself when create cert(User’s CSR)!