Endnote X7.1.1 for MAC not synchronising with Endnote web

I am using endnote Ver. X 7.7.1 and moved it to a new computer. Since that time it does no longer sycnhronize with the endnote web. All references I am adding on the desktop are not showing up in myendnote web.

Can anybody give me advice how to deal with htis problem?