my yahoo account only shows 13 messages at a time. I cannot access any past messages in my in box.?

Answer 1

Fix problems with New Mail: https://help.yahoo.com/kb/sln28075.html

Answer 2

i would contact yahoo about it, maybe they can fix it

Answer 3

Restore emails - 

https://help.yahoo.com/kb/SLN2552.html 

Answer 4

One glitch requires you to switch to desktop mode on a mobile.