[Plugin] ABBC3 Compatibility

Hi,

I followed the instructions and put the core into EXT and nothing else changed, what should I do to make the change happen.
I don't see the app when I refresh inside CUSTOMISE

Thanks,
Kris

[IvanPF]

This plugin is only for ABBC3 compatibility.
There is no need to install it as an extension, just upload the files from the "upload" folder with the same package structure and clear the cache from the ACP

Unfortunately, it didn't take effect and I overwrote abbc3.php again

I put in the same file roadkill, refreshed the ACP, and found that there is still no change, is there a mistake somewhere?

*Private content*

I solved it.