- Plesk for Linux
- Plesk for Windows
- The Let's Encrypt extension shows variables but no text in Extensions > Let's Encrypt > example.tld:
Let's Encrypt version is below version 2.5.2;
Plesk 12.x is installed.
Plesk bug EXTLETSENC-473, which is already fixed in Let's Encrypt extension 2.5.2.
Upgrade Let's Encrypt extension to version >= 2.5.2.
Go to Extensions > Let's Encrypt and click Upgrade.