LetsEncrypt Acme Challenge error

I’m having an issue regenerating my letsencrypt certificates which is causing my site to be down currently!

I temporarily disabled one of my redirect domains setup in my production/wordpress_sites.yml by following the steps in @fullyint post

Somehow, I also had to run the provision script with the nginx tag:
ansible-playbook server.yml -e env=production --tags nginx because of this error:

nginx: [emerg] BIO_new_file("/etc/nginx/ssl/letsencrypt/example.dev-
86aea94-bundled.cert")

Bur after that all good, site worked again!
However now that I moved my domain and re-pointed the A record to my VPS again, the same steps won’t work anymore.

Disabling SSL, reprovisioning, everything works without errors, but re-running:
ansible-playbook server.yml -e env=production --tags letsencrypt

just hangs for hours at:
TASK [letsencrypt : Test Acme Challenges]

Which currently breaks my site!
In this topic @fullyint suggests:

delete the CSRs in /var/lib/letsencrypt/csrs
delete the certs in /etc/nginx/ssl/letsencrypt

But nor with web nor admin user, I’m able to access these folders?
What else can I do (other than completely destroying and re-provisioning my VPS)?

Thanks!