Don't worry. But I don't understand what you need to add to the plugin. I mean, I don't make banners, I just make the code. Then each user must adapt it to their project. If there is something specific that does not modify the main operation of the plugin, you can request it here. All the best!
Viewing post in RPG MAKER MZ Plugin: Gacha Minigame comments
Sure, please send a email here:
https://itch.io/blog/694860/undermax-support-page