WXTide32 and svHorizon forum

hello, i'm from Mauritius island and i'm not able to get the tides right.
here is the tide table from the government http://metservice.intnet.mu/?page_id=556
and in WXTide32 i add the station "Port Louis, Mauritius Isl" my computer clock date and time are fine.
but i have 5:14 time difference to the next high tide.
i don't know, how many hours i been trying.
anybody have a idea or hint, what is going wrong here.
thank you very much.
stefan