Hello,

It happens usually when the SSL certificate assigned to Plesk is expired or self-signed.

I would recommend following the steps from the official Plesk documentation here on how to fix that problem:

https://support.plesk.com/hc/en-us/articles/213954265

Hope that this helps!
Regards,
Bobby

So I tried following the steps for Let’s Encrypt part. I’m unsure what must enter in the domain name section. I tried entering the IP address but that’s not allowed.

Tried entering droplets name.local and it says Error: Could not issue a Let’s Encrypt SSL/TLS certificate for ‘Droplet name.local’

Perhaps this domain is at risk group and is blacklisted on the Let’s Encrypt side.

So no IP addresses and no droplet name. What exactly should I enter in there?