LetsEncrypt confirmation form is very badly designed
The LetsEncrypt enabling confirmation form is terrible.
First off, it requires that the user wait for something before they hit Continue, while the Continue button is readly enabled and very prominent. The instruction to wait on DNS change, is described in a tiny final sentence on the form. This is as bad UX as it gets.
Also, it doesn't describe how the user should check whether the change (adding the TXT record) was completed.
There's also two Cancel buttons for some reason.
Could you please be more specific? What confirmation form do you mean? Where this form in Plesk LetsEncrypt extension? Or where?
Joris W commented
Admittedly, I'm just a Plesk user so I don't know whether LetsEncrypt is an extension or something else. But I'm talking about the form that comes after choosing to enable LetsEncrypt for a site, in which it says to make sure a TXT entry is visible on the domain before proceeding.