I’ve decided to stop developing/supporting this plugin. I know this can be an inconvenience for the current users of the plugin, but the plugin will be opensourced (https://github.com/development-fennecx/AdvancedInputField). This way the current work on the plugin won’t be lost and other developers can fork the repository and continue development.
The reason for stopping development is mostly related to available development time. I’ve developed/supported this plugin for almost 5 years in my free time, but now it’s time I want to focus on other projects.