I have tried all the steps in the ticket #17091 as it is almost similar. However I am not up to speed with the browser debugging tools mentioned in this ticket and therefore seek your help.
Everybody will be able to see its contents. Do not include usernames, passwords or any other sensitive information.
Latest post by dlb on Wednesday, 14 May 2014 08:49 CDT
I suspect that newly added users are added to the wrong user group, or he changed the permissions of the user group these users belong to, depriving them of the front-end login privilege. Essentially, this is an ACL issue. If he can’t figure it out himself my standard reaction is to tell them to buy an ACLManager.net subscription and have Sander take a look at their site. He’s the Joomla! ACL guru and he’s far more efficient at this kind of issues than me.
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