New droplet is trying to use an expired SSL certificate from Let's Encrypt
I scrapped an old droplet and set up a new one a few days ago. I don't remember playing around with Let's Encrypt on the old one, but I possibly did.
Anyway, I've set up the name servers etc. and can access nginx's landing page from my url. But some unexpected things are happening: 1) every request redirects to https even though I haven't configured this, and 2) my browser tells me that my site is trying to use a Let's Encrypt certificate which expired about a month ago (long before the droplet was set up).
Does anyone know how to resolve these issues?