How to restart chat add-on if it is not working on your site?
After your server is restarted, change the port, SSL key, cert in ChatApp.js
Step1: Open SSH and log in by SSH root account info
Step2: Open pm2
Step3: run pm2 show ChatApp to check the ChatApp status
Step4: If ChatApp.js is not started then run pm2 start ChatApp.js
Step5: else if ChatApp.js is started then run pm2 restart ChatApp
Step6: Check chat addon on your site again