Wow, I've been wanting to develop a LetsEncrypt plugin for NodeBB for quite some time so if there is one now I will definitely take a look soon @julian julian please develop a LetsEncrypt plugin for NodeBB, it will solve lots of problems. Thanks man.
@PitaJ Cool! If the query string only changes on ./nodebb build then "Cache everything" works well. I thought the query string was different for each user or represented some token/cookie. I guess I should have checked how it is generated before posting.