Thanks for your valuable input Steve!!

Just as Steve was mentioning, the server HW and SW play an important role.
If you miss HW, the system may be slow. If you miss SW, the system may not work at all.
Have you followed our installation manual our wiki step by step and installed the libraries we mentioned?
Otherwise, have you considered
using our cloud (you can try it free of charge for 30 days) or getting help from our Official Support Team? If you would like to proceed with any of these two, feel free to send us an email to contact@fengoffice.com for further info.
Best regards,
Francisco