zorange
Yes, osTicket 1.16.x requires PHP 8.0.x.
This is the Forum where community members provide support and suggestions whenever they have time. If you need the core development team to provide support you can go to our website (osticket [dot] com), go to the Contact Us form, and explain the situation and that you are looking for support. There, our customer support team will respond with the available support options (which are paid options).
Cheers.