I'm 99% sure the letsencrypt part - although i know I did it right and uncommented the config file properly was responsible for screwing up the nginx service from not being able to restart.
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@ConserveLetters Ah ok
Not sure if some of this is useful
Andrew really knows his stuff as does @noisytoot
@zleap @noisytoot Thanks, Paul I'll take a look at that - going to start over from scratch and rebuild the server!