Need help with a 1.12.2 forge mod generator for MCreator 2025.2

So, i decided to make a mod for 1.12.2 Forge, i used a generator for 2025.2, because using the 2021 version is too difficult, as it doesn't have a lot of features.
I've downloaded this generator, but there is a problem:

   1. In manage plugins, the mods shows up as fully loaded, but when creating a workplace, it isn't available as an option.
   2. Only Neoforge is available, when i try to choose forge, an error that says "no plugins supporting this generator type are currently installed" shows up, and sends me to the plugin page on the website.
How do i fix those problems?
                                                Thanks in advance!