zoho contacts won't sync with android

zoho contacts won't sync with android

Hi

I have a problem with syncing my contacts from zoho to my android phone (galaxy S 4).

When I try to add, edit , delete a contact from the zoho web page it syncs just fine to my phone.

When I add a contact from my phone it doesn't sync.

as a result I have (for expample) 251 contacts in my phone but only 241 on the zoho web page.
all these contacts where added from the phone.

Other than that mail and calendar works fine (except the fact that it doesn't sync right away......)

thank you