New ring 2 user battery not charging

Had my ring 2 for a week or so and treated myself to a transformer to hardwire it

Fitted the adaptor and charged battery while it was being fitted

Dashboard shows as hardwired but battery is now @97% was @99%when I put it in

Live on a very quiet street and only activates when some is with a few metres of the door

Adaptor I used was this I’ve trimmed the cable to about 2metres

24V 500MA Transformer, AC Power Supply Compatible with All Versions of Ring Doorbell and Nest Learning Thermostat Ecobee, Honeywell, C Wire Adapter with 8M (315") Long Cable

Any help greatly appreciated