I started using the Simplenews module of the latest version: 4.1
The site is on Drupal version: 10.4.6.
Sending newsletters works fine. But you need to press a button!
The problem is that I need to:
1. PROGRAMMATICALY add new issues (types: NewsLetter issue);
2. PROGRAMMATICALY activate them for sending.
I've created a custom module to implement multi factor authentication(MFA). I have a "settings" page. It's implemented with mfa.links.menu.yml, mfa.routing.yml, and MFASettingsForm.php files in the standard way. I have another module that has a settings form also implemented the same way that works fine. When I save the settings form I get an unstyled page containing just the text "Contact Support" and the data is not saved. The Apache access log records a 200 for the favicon.ico and thats it. Nothing is written to the Apache error log.