Noticed when switching to the invisible Google re-captcha option Hotspots doesn't like it when using the contact hotspot owner option. Gives ERROR 0 - PLEASE COMPLETE THE CAPTCHA.
I know the invisible works on my site as the registration uses it fine.
Bit odd, as I thought Hotspots just used the site plugin for re-captcha??
I have switched back to V2 for now, but thought I'd raise this.