There is an .exe in the proxifier's folder called NetConf. If you want to luanch BI client then first start this. Select remove settings (if you can't select it then that means you can start your BI launcher) , then press next and closse the netconf. Now you can start the BI launcher, and you can start the proxifier too. After you launched BI and Proxifier follow ZoOoOoM's guide from step 7.