I very seldom write a negative review and before I wrote this review I believe I exhausted any potential for resolving the issues described with the developer who categorically declines to support it without prior payment - even though he has already been paid...
I bought this extension to provide a single sign-in for a group of websites with different domains. Having followed the less-than-adequate instructions provided with the extension and having tried various combinations of settings as described therein, it quickly became clear that this extension is not what it claims to be.
The documentation advises that it is necessary to share the jos_user and jos_sessions database fields in the respective databases and also the same 'secret' word in the configuration.php file. It explains that the table prefixes must be the same and having carefully done exactly as instructed, nothing happens. Even Firebug showed nothing to suggest what was wrong - which leads me to believe that the extension actually does nothing useful.
I am not quite a Joomla novice so I understand that the jos_core_acl_aro and jos_core_acl_groups_aro_map tables are also essential when manipulating user data - something not mentioned in the documentation and a very serious oversight which means that it is not possible to make this extension work by following the instructions.
I asked for support and was advised that my very detailed query was 'ambiguous' and thatI should consult the forum or register for paid support.
Being unable to find anything relating directly to my problem in the forum I once more asked for some advice by submitting full details of the procedures and settings I used when using the extension with a request for suggestions as to what might be the problem, especially if I had overlooked something - I am not inclined to blame an extension for my own shortcomings so this seemed a reasonable request in view of having paid £20+ to the developer already.
The dismissive response was to the effect that if I wanted the extension installed for me I must order paid support.
That is not what I wanted - what I wanted was to get the extension working, know how I did it, then write a glowing review here.
I have tried to use it with separate TLDs, subdomains and even different servers - it doesn't work and I am beginning to suspect that this is little more than a device to sell paid support and/or other extensions from which it appears this utility was extracted.
Reading the 'small print' the developer also claims that the payment is NOT for the extension - that is free - but for the facility to download it. Does this mean that Belgium is outside the scope of EU regulations for fair trade? I think not!
I am not impressed with the extension or the developer and would advise extreme caution when considering this particular plugin. It is not what it claims to be!