I mean really, if you use lets encrypt for anything that runs in a production environment, the responsible thing to do is build a fallback to switch to another provider in case LE has a bad day (or hits a brick wall and needs to say, enforce export restrictions).
alt Hacker News
Actalis, based in Italy offers a free tier, with ACME https://www.actalis.com/subscription
ZeroSSL from Austria also has a limited free tier. https://zerossl.com/pricing/
I mean really, if you use lets encrypt for anything that runs in a production environment, the responsible thing to do is build a fallback to switch to another provider in case LE has a bad day (or hits a brick wall and needs to say, enforce export restrictions).