2nd Gen doorbell & 2nd Gen Solar Charger

Hi Guys, I have a 2nd Gen doorbell and 2nd Gen Solar Charger; connected the charger about 2 weeks ago. It would appear that the battery is still draining (was about 35% and is now at 21%). They are installed on the front of my house where I have also got a stick up cam with a solar panel which has remained at 100% charge since I installed it around July. I know it's autumn now however I still get a lot of sunlight (when not raining of course) on the front of my house. 2nd issue; neither the stickup cam or the doorbell recognise that I have connected a solar panel charger to them - I have uninstalled re-installed app and it still does not show as connected. Any ideas/suggestion welcome. Thanks