Update readme

README.md

@@ -1,12 +1,17 @@
 # Goodix FP Dump
 
 All our work to make Goodix fingerprint sensors work on Linux.
-You can communicate with us at the Discord channel [Goodix Linux Development](https://discord.com/invite/6xZ6k34Vqg)
+You can communicate with us at the Discord channel [Goodix Fingerprint Linux Development](https://discord.com/invite/6xZ6k34Vqg).
 
-The libfprint driver development can be found at https://github.com/rootd/libfprint
+The libfprint driver development can be found at https://github.com/rootd/libfprint.
 
 ## How to use it
 
+We do not recommend using this for now. This is very unstable.
+Also, this make people to create many duplicates issues to tell us that it doesn't work. Of course, we already know that.
+Because of this, programs execution might be disabled in the future.
+So please think carefully before running this or creating an issue.
+
 ```
 $ python --version # Must be Python 3.10 or newer
 $ sudo pip install pyusb crcmod