I am currently having a problem where I cannot access any subsequent page after page 1 in the inbox folder of my outlook account. Last week I had 4 pages worth of emails in my inbox folder, whereas now (without deleting any emails) I only have one page worth of emails in my inbox folder. Furthermore, every time I receive a new email, the oldest email on page 1 is lost (presumably to page 2, which no longer exists). I then tried deleting emails from page one of the inbox, and no emails from page 2 ascended to fill the empty space. No other folder in my outlook account was affected. The only other information I have is that I changed from using safari to firefox last week, but I'm not sure if that is coincidence or whether it is actually related to my current problem.

SUMMARY
 I only have page 1 of my inbox, page 2,3 etc does not exist. Every time I receive a new email, the oldest email in page 1 is lost (if page 1 is full)

How do I fix this problem?

Thank you for any help you can provide!