So yesterday at around 11AM EST my website stopped working and started showing error 526 (Invalid SSL Certificate) instead, I didn’t change anything on the server or any settings in cloudflare and the certificate didn’t expire.
For some background I do use Lets Encrypt with their DNS validation and its worked fine since they originally released that.
In cloudflare my crypto SSL setting is set to full strict which is what its been for several months now, if I change that from full strict to just full the error on the site changes from error 526 (Invalid SSL Certificate) to error 520 (Web server is returning an unknown error).
I can access the site fine internally so as far as the web server itself goes its working fine.
Ray ID for Error 526: 4684e6719fb450aa
Ray ID for Error 520: 4684e2f81ea950aa