Unable to login via ssh after enabling strong-crypto

Hi all,

I have enabled strong-crypto on my RB751g-2hnd router running router OS 6.39.1. I have tried logging in via putty and tera term without success. I can however login via mac-telnet. See the below log snippet.
22:07:56 system,error,critical login failure for user pranav from 192.168.88.15
via ssh
22:08:01 system,error,critical login failure for user pranav from 192.168.88.15
via ssh
22:08:01 ssh,info auth timeout

What is the problem? I am using a complex password but it does not have any spaces in it. Do I need to use a pass phrase with spaces?

Pranav