manual update send receive

Good morning, 
please I need your help concerning the message update.
the manual send/receive message update- sincro does not work for me…
how can I fix? 
tks in advance.

Are you using POP3, IMAP or Exchange?

To see which you are using, go to Menu > Tools > Accounts. By clicking on your account you should see either a POP or IMAP tab on the right.