Apple watch 5 Passcode option is greyed out
I want to turn on my passcode on my watch but that setting is completely greyed out. I tried it on the watch app on my iphone 8 but it is also greyed out. Both softwares are up to date. I can only toggle the wrist detection.
I also did a reset on the watch but it did not work.
I just bought my apple watch series 5 and set up it up from a watch backup series 2. The old watch (series2), passcode setting working properly. Please help. Thank you
Apple Watch Series 5, watchOS 6