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LimeSurvey version: 6.15.6
Own server or LimeSurvey Cloud: Own Server
Survey theme/template: Bootswatch
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My apologies if I'm mistakenly posting this twice - didn't look like the first one went through. I am running surveys in closed-access mode.  Users are getting '403: forbidden - invalid access token' messages, but the responses are being recorded. I'm not sure why this is happening all of a sudden, I didn't make any changes and we were having success a few days ago. Thanks in advance for any ideas on this!