Yahoo mail on T-Mobile BB not synchronized

[clansman]

Hello to everybody who will read my 1st post here on forum.
I have big problem with my BB 8520 and yahoo mail, so i need a lot of help .

When i want to add yahoo mail on BIS (T-mobile in Croatia) I always get note that my user name and/or password was incorrect. Is not matter if i use free or yahoo mail plus.
Next step i discovered accidentally is that when i write same mail but with Microsoft exchange domene (not real mail) then i get after some time additional options link, here i can write plus.pop.mail.yahoo.com in e mail server field, off course i wrote back @yahoo.com (real mail) and after this mail work, but thats not all
Mail does not have any synchronization at all. When i read mail on BB it will never be readed in inbox, and vice verse when i read mail in inbox it will never be raded on BB device.
Also sometimes it took more than 10 minutes for mail to come on BB (in inbox on computer it comes in few seconds).
i'm try couple of things (remove battery, remove mail from bis and add it again, remove service book etc.) nothing solve my problem..

thanks on Help

[the_tom]

try just doing a reboot on the phone press and hold the alt key then press and hold the shift and delete at the same time it will do a soft start and reboot. that should help i did it on mine and it seemed to work i had different problems though. good luck

[clansman]

It is not help...problem is the same....i believe that your solution is same think like removing battery...anyway i'm try this and i still need help becouse my problem is not solved...
the tom, from which country you come?