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Your LimeSurvey version: 5.3.12+220502
Own server or LimeSurvey hosting: Own server - VM on ubuntu
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Hi all. New users can't login anymore. Error 'incorrect passwords or username'. I've rest password via admin account and the the same error occurs when user tries to login. I've deleted and remade the user, same error. I've setup a test user, same error again.

I've even rolled back to a previous VM snapshot to a point where we first started adding users (this user account worked fine originally) with the same error.

Any ideas? Everything did work fine, then it just stopped. I don't understand why i'm getting an 'incorrect password/username' when they are clearly correct.

Many thanks

Solved.

Configuration issue with our DNS server.

Phew!