Apple Watch repeatedly asking for Apple ID
This may be an old issue or it may still continue. I suggest to use the Apple process (even though entering your Apple ID to your watch is not that easy) and enter your ID. Once you did it, you will get used to it. You will needed for other things as well anyway :)
Tips: I used the hand write and worked fine. Remember, just doing the first motion for “I” (letter L) that’s say, may generate “1” (one). No problem, use the knob and all the close figure letters and numbers will come in line. Pick the one you want (the right character).
Just wanted to share
Apple Watch SE, watchOS 7