Hi guys,

sin.conf https://drive.google.com/file/d/18PDkxRaLx4zsxDaxOUXyDOBBf2h4NWYd/view?usp=sharing

Win+R to open the Run dialog.
Enter %appdata%/SIN to open the SIN directory

For testnet, paste the sin.conf file to the SIN folder.
And reboot wallet.