External Website through secondary link

HI

We have 2 isp links on F5 box( end device ) and we are using one of proxy device to filter user wesite traffic

some of external website like .org sites are not opening in office through proxy server and without proxy internet computer .

After troubleshooting we found mentioned( all this url have same ip address .they all are cloudflare multiple wesbite with single ip address )external sites are not working through primary ISP link ,

So we create virtual server with secondary link pool to pass traffice through secondary link .

Now we can access same website behind proxy server ,.......... BUT

same website are not working on without proxy internet computer

If same virtual server is Pause , mentioned websites are not working through behind proxy .

All this websites are with Mulitple url with same ip address ( eg: services given by Cloudflare )

Kindly guide so website can work on both computer ( computer with proxy and computer without proxy with internet)

Setting Done on F5

SOURCE : 0.0.0.0/0

Destination: WEBISTE IP ADDRESS AS HOST

SERVICE PORT : HTTPS

Protocol: TCP

Thanks in Advance.