@EdoPaz The message "Data synchronisation failed" may be caused by many different reasons. Most probably yours and bob's issues have completely different nature. Consequently, without client and server logs, not much can be advised.
@EdoPaz@RadoslawNowak I believe in moving to 8.5 these issues seem to be resolved. However, it should be noted that Pega’s focus lies more on developing it’s api capabilities. Rather, than on it’s native mobile app.