Let's encrypt error:No registration exists matching provided key

[GeekBoy]

Try this this thread

Cannot issue Let's encrypt certificate

certman version 13.0.36.11 This module has been published and is now in the “edge” track To enable the edge track, go to “Advanced settings and set “Set Module Admin to Edge mode” to “Yes” Then go to module admin and click “Check Online”. Note this will show updates for ALL modules in the edge track. Update the module(s) relevant to your issue. Once finished go to “Advanced settings and set “Set Module Admin to Edge mode” to “No” You may also upgrade from the command line with "fwconsole ma…

I found at least one solution in there for it when I ran into a similar issue (and not the marked solution.