If you mean it just keeps failing to solve then that's Google's way of telling you that you do too many of them. I had a similar problem but after I stopped using sites with reCaptcha for a few days it was OK. Now I restrict myself to 5 a day and I just only have to check the box and don't even get a puzzle.
Actually it doesn't matter even if you have to solve 100 a day, because the verification only determines if you are a robot or not. Since my Google account had issues, sites with reCAPTCHA will always be a major hindrance for me.
Hence I have to rely on SolveMedia to claim from the faucets.
I could click on all images with street signs, buses and cars but in the end, this would mostly happen.
