First close your firewall.
1-Delete hacks if you have in your pc.
2-Add S4 League's folder to whitelist of these programs if you have in your pc:
IOBIT Malware Fighter
Avast Security
Kaspersky Security
Advanced System Care
Advanced System Care Ultimate
Any Anti Viruses
Firewall
3-If these stuff didn't work download this and extract to your s4 folder:

4-If this client,xtrap and hgwc files didn't effect anything,re install s4 league