Here is the thing. With your help (still very grateful for this, worked like a charm following your advice), i generated many letsencrypt certificates for a few websites hosted on a VPS with nginx.
Currently a few issues with my hoster (LWS, not to recommend them …), i will for sure change it in a few days, certainly for another VPS still on debian with nginx.
Here is the question : should i regenerate all my certificates, or can i just copy / paste them to the new server ?
Thanks for your help !