I still remember when the idea of memotoo was born about 10 years ago when the creator said to us "What do you think of a software that enables you to save your favorites and contacts online?". I can't believe how this project has evolved, how mature and versatile it is now! Congratulations!
» Make sure you have set SERVER URL to http://sync.memotoo.com/syncml
» Try to sync without SSL: your phone might not fully support addresses with https://...
» Enter again http://sync.memotoo.com/syncml and check that there is no return line at the end
» If you have problems with date and hours, verify you have the same timezone in Memotoo and on your device, and verify if DST (Daily Saving Time) is activated in both or not.