Can't use MCreator Link on NeoForge 1.21.8

I can't get this to work! Here is what I have done:

1. gone to https://mcreator.net/download/link and downloaded latest version (for NeoForge 1.21.8)
2. placed the jar file into <workspace>\run\mods
3. Ran minecraft
4. Pressed L to open menu
5. Menu open, just shows Searching for link enabled device... then I look it up
6. Opened MCreator Link: Getting started with Arduino | MCreator
7. Downloaded library to Arduino IDE
8. Opened "C:\Users\adam\Documents\Arduino\libraries\MCreator_Link\examples\BareMinimum\BareMinimum.ino" in Arduino IDE
9. Uploaded to Arduino Uno R4 WIFI
10. Opened Minecraft, still not showing up
11. Force stop Arduino IDE to see if it was using the serial port
12. Still not showing up in minecraft
13. Follow instructions for MCreator Link: Installation | MCreator (opened workspace settings, went to the external apis, and enabled MCreator Link)

14. Pressing Confirm on the Refactor Workspace popup

     

15. Executing Gradle task: build 
    Build info: MCreator 2025.3.42611 EAP (42611), neoforge-1.21.8, 64-bit, 32687 MB, Windows 11, JVM 21.0.8, JAVA_HOME: D:\Downloads\MCreator.EAP.2025.3.42611.Windows.64bit\MCreatorEAP2025342611\jdk, started on: 2025-10-20-14:12:48 
    Loaded APIs: mcreator_link 
     
     
    BUILD FAILED 
    Task completed in 9 seconds 
     
    Calculating task graph as no cached configuration is available for tasks: build 
    FAILURE: Build failed with an exception. 
    * Where: 
    Script 'C:\Users\adam\MCreatorWorkspaces\test_fabric_mod\mcreator.gradle' line: 6 
    * What went wrong: 
    A problem occurred evaluating script. 
    > Could not create task ':mcreatorLink'. 
       > Can't get https://mcreator.net/link/download/1.21.8 to C:\Users\adam\MCreatorWorkspaces\test_fabric_mod\lib\mcreator_link.jar 
    * Try: 
    > Run with --stacktrace option to get the stack trace. 
    > Run with --info or --debug option to get more log output. 
    > Run with --scan to get full insights. 
    > Get more help at https://help.gradle.org. 
    BUILD FAILED in 736ms 
    Configuration cache entry stored. 
     
    BUILD FAILED 
    Task completed in less than a second

    Help me?