MP via POP3 isnt downloading all of gmail account?


This seems really petty so I am sorry if it is simple/petty but I setup a gmail account with mailpile and POP3 thinking/hoping it would download all the email from the account but it seems to have just downloaded the latest 150 or so emails and thats it?
I double checked the gmail account and what seemed to be the relevant setting “Enable POP for all mail (even mail that’s already been downloaded)” was selected, i did so again and saved just for good measure".
Another small question, is there a way to have mp show all emails, or perhaps set the number of emails it shows per screen?