LimeSurvey comes in two editions, and each one has a different support model.
This article explains where to get help in each case.
If you have a LimeSurvey Cloud subscription, you can contact the LimeSurvey team directly. On your account page at account.limesurvey.org, use Contact customer support in the "For support" box. For an overview of all channels, see What kind of support do you offer?
The LimeSurvey support team does not provide support for CE installations, so use these channels instead:
Security vulnerability reports are welcome no matter which edition you use — use the contact page at www.limesurvey.org/support/contact-corporate.
No. LimeSurvey does not provide support for Community Edition, and this includes holders of a purchased ComfortUpdate key.
If you use Community Edition but need direct support from the LimeSurvey team, you will need a LimeSurvey Cloud subscription — see Subscription plans for an overview.