Hello Gisela, and thank you for choosing JUSTANSWER.com
Very sorry to hear you have been working at this previously for 4 hours.....with no luck.
I will do MY VERY BEST to help you get your emails working.
But first, i need to ask you a bunch of questions.
Your email....what is the domain? and HOW do you access the inbox (with a web browser, or with an email client)?
The best results will be if you use a browser based inbox, as this will keep the experience the same across all platforms, and is the easiest to manage.
But if HAVE to use an Email client, then you SHOULD be using IMAP4 as the protocol of choice.....and not be using POP3.
Please reply back