Watch cycles while trying to charge with a 3rd party charger but works on other watches ....
Using a 3rd party charger, my 7 will show charge, then it cycles to the regular watch face and then to the log in and back to charge, ect.
Using my wife's 5, it charges as it should.
And that's with 2 different 3 in 1 chargers.
Not the end of the world but annoying. If I had to guess, there's something interrupting .....
Apple Watch Series 7