FOP2 Community Forum

I recently purchased the FOP2 license, after activating the license i decided to setup letsencrypt certificate for my Issabelpbx, now my issabel pbx opens on secure browser but my fop2 keeps showing "Unable to connect"," System is not available now", "WebSocket connection to 'wss://css.xxxx.com:4445/' failed: " , I have restarted fop2 server after i added the letsencrypt certificate to /usr/local/fop2/fop2.cfg but still not working, please look at my configuration files for Issabel ssl.conf and fop2 fop2.cfg as attached