PKP PN plugin status is not displayed

Describe the issue or problem

The PKP PN plugin is enabled and configured. However, the plugin status is not displayed.

Steps I took leading up to the issue

  • Installed and enabled the PKP PN plugin.
  • Completed the plugin configuration according to the PKP recommendations.
  • Opened the PKP PN plugin settings.
  • The plugin status is not displayed.

What application are you using?

Open Journal Systems (OJS) 3.3.0.13

Additional information

Journal: HUDPROM: The Ukrainian Art and Design Journal
ISSN: 2786-7285
https://hudprom.org.ua/hp/index

No error message is displayed.

A screenshot of the PKP PN plugin page is attached.