I have and have been impressed with my EK7000, however its not been used much over winter as not great in low light. Have started to use again for ride home from work as light ans the top shutter button keeps getting stuck down, this is on the actual camera not in its case. What's the best thing to lubricate this with? The link below should be to the camera
AKASO EK7000 4K30FPS Action Camera - 20MP Ultra HD Underwater Camera 170 Degree Wide Angle 98FT Waterproof Camera with Accessory Kit
https://amzn.eu/d/1TmsGjL