Apple Series 5 is a waste of time and money

These people sell something called Apple Watch Series 5. I have had 3 Apple Watches previously. I paired to iPhone exactly as instructed but Watch Activity would not work - would not count steps taken or increase move goal. Spent 5 hours searching the Internet for a solution and unpaired then paired again 4 times. No luck. Quadruple checked every f#@$&ing setting but NOTHING worked. They sell a defective product. Returning for a full refund