i dont understand what a register tab is.
in v 1.0 the usb tab is now serial, in wifi if you use onboard wifi you pick ap/client then after a APPLY and reboot go to the wireless icon and enter the marina's ap name password to connect..the range is limited with the onboard wifi.
you should give more info to get help rpi model version of op ect.
https://docs.sailoog.com/openplotter-v1-x-x/network
in v 1.0 the usb tab is now serial, in wifi if you use onboard wifi you pick ap/client then after a APPLY and reboot go to the wireless icon and enter the marina's ap name password to connect..the range is limited with the onboard wifi.
you should give more info to get help rpi model version of op ect.
https://docs.sailoog.com/openplotter-v1-x-x/network