diff --git a/README.md b/README.md
index 7990dc9..3ec6882 100644
--- a/README.md
+++ b/README.md
@@ -10,9 +10,16 @@ Run the script and follow the assistant:
 
 Once it ends, you can run it again to add more users, remove some of them or even completely uninstall OpenVPN.
 
-### I want to run my own VPN but don't have a server for that
-You can get a VPS from just $1/month at [VirMach](https://billing.virmach.com/aff.php?aff=4109&url=billing.virmach.com/cart.php?gid=1).
 
 ### Donations
 
-If you want to show your appreciation, you can donate via [PayPal](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=VBAYDL34Z7J6L) or [cryptocurrency](https://pastebin.com/raw/M2JJpQpC). Thanks!
+This is foked from https://github.com/Nyr/openvpn-install.
+
+Changed cipher type and lan ip range.
+
+Tps:
+
+```
+The system must be supported AES-256-GCM. I try successed in Ubuntu 19.04 from google cloud.
+And the version of ubuntu 18.04TLS is not supported.
+```