The captcha seems to generate multiple correct answers, which leads to failing the captcha and not being able to sign in. Both images have the same contents, except they’re at a different angle, and personally I couldn’t find a way to distinguish the correct image.
Example:
System Information: Intel Core i7-9700K, NVIDIA GeForce RTX 2070
Browser Information: Chrome
Expected behavior
If this behavior is intended, it should make it clear to the user what they need to do.