Why am I having problems with PB connecting to BT mail?

I've used my PB to access my BT mail for the last 2-3 years without any problem but for the last couple of days I've been getting messages that my password is incorrect or that BT mail is out of service. Works fine from PC, BB Z10, Android etc.

Tried deleting and reinstating account but fails to connect. Any suggestions?

Resolved, was a problem with my WiFi

How could the wifi have been the problem? I'm having problems connecting to yahoo and gmail. Keeps requesting me to re enter password info.