How do I uninstall Rapport (IBM) when I cannot find it on my computer!

We have a 13 year old iMac which doesn’t get used. Recently we’ve realised it has photos on it that we don’t have certainty are backed up elsewhere. When I open it, it gets jammed for ages whilst this Rapport Trustee site opens in safari. When I try to click a link from this forum on how to uninstall it it takes me to IBM where it says that product has been removed. Help! How do I get this thing off my machine!