Troubleshooting
The captcha will not accept my answer. Why?
Answer
Usually case. The captcha is case sensitive. Reload for a fresh puzzle and type into the real field.
Short answer. The captcha is six characters and case sensitive, so most rejections are a case mismatch. Read the case carefully, and if the page has been open a while, reload it for a fresh puzzle.
Case and freshness
Match the case exactly. A capital typed as lower-case fails. A stale page can carry an expired challenge, so reload for a fresh captcha and fresh field names before trying again.
The right field
The login has decoy fields whose names rotate. Type into the visible real field only. If a password manager is filling a decoy, fill the visible field by hand. And confirm the captcha address matches your bar first, because a clone's captcha can behave oddly.