I registered in Phoca (annoying security prompts) and found no help.
In a google search for problems with Phoca several clues that were all brought no result.
I think it is better for a plugin to buy with Suport.
Have a nice day
will be great if you can be more specific.
Not sure if you run some e.g. forum etc, but please you should know, that in world of spam and ddos attacks, you need to run some protection in the forum. :-(