Folder not completely updated

I’ve installed EM yesterday and it looks good. I’ve only a problem but it is a very big problem. I have many folders and sub-folders to organize emails. One of them is not completely updated. On the webmail I can see I have email also today but in EM I can’t see emails arrived after january. It could be because EM folders has a limit?
please help me because EM could be my perfect client if you solve this


What account type and mail service provider are you using?