If you define the full path to the files, it will not work, because path to the root will be added as prefix to the cert files:
1) In this case it will work:
2) will not work:
Please remove previously log.log file and then run Jot Server using forever. If there is any problems you will see log.log again with errors.
If everything is ok and server is running then you need to check browser console on main messenger page, if there is connection problem, then you need to check the port using telnet command.