Technically it is the same whether they enter their age within the survey at a question at the beginning or if they enter the age during registration.
Alternatively, you can add some terms of use at the beginning of the survey and ask users to accept them. This is described at "Adding 'I agree' button at the beginning of your Limesurvey survey":
www.limesurvey-consulting.com/adding-i-a...r-limesurvey-survey/
Best regards/Beste Grüße,
Dr. Marcel Minke
survey-consulting.com
offlinesurveys.com
Feel free to contact me by email for professional LimeSurvey support!
email wrote: I also try to use the replace register plugin but it still not working.
It's not done for this (and not tested with last GIT)
Assistance on LimeSurvey forum and LimeSurvey core development are on my free time.
I'm not a LimeSurvey GmbH member. -
Professional support
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Plugins, theme and development
. I don't answer to private message.