Hey there everyone, tech team here.
Yeah, we have been informed that an increased percentage of users saw this issue during the past week. Our top agents were on it, and in communication with "internet's higher powers", the issue should have been resolved since Tuesday July 28th at 14h GMT. Since then we got no new reports and it has been calm. In short, the Captcha system decided to start displaying for people who were by no means considered bots or malicious, the vendor fixed it asap.
If you still find that you are seeing Captcha challenges, please tell us. We are monitoring the system actively and do not see any irregularities right now, but as you know, something can always slip through the cracks.