Troubleshooting

Respondents can't take my survey

Usually the study is not live, the device already responded, or a shared network hit the rate limit.

"This survey isn't available": the study is in draft or closed, or the link is wrong. Open the study, go live, then try the link again.
"You've already done this one": the one-response-per-device limit found a completion marker in that browser. That is it working as intended; use a test drive link for rehearsals.
"Too many requests. Please slow down.": the platform rate-limits survey traffic per network address. A burst from one office network or kiosk can trip it briefly; it clears on its own within a minute.

Testing your own study? Always use the Test drive link. It bypasses the device limit and keeps your rehearsals out of the data.