Either you didn't save it or there is an issue with Firmware.
Log in as admin
Machine Status button
Tools Tab
Device Settings - Test and Reset and do a Reset.
Machine will reboot
Then retry the Network configuration.
Hello team how are you?
I have the next printer Xerox Phaser 3635MFP, System Software Version 20.105.01.010
The issue is despite I entered a new hostname, static IP address information, DNS and so on! suddenly all of that entered data lost and the printer got the TCP/IP through DHCP.
May you help me out what could be the reason for disconfiguration?
I will appreciate your comments and advice greatly