Can you look at Blogs and Homepage to see whether you have user data populated in them? You will need to view BLOGS.ROLLERUSER table but you may want to use a visual tool as opposed to running DB2 select statements which are complicated. One I can recommend is http://www.dbvis.com/
You want to check that your user details have populated to BLOGS.ROLLERUSER and also compare them with the data for you in EMPINST.EMPLOYEE. Check your email address PROF_GUID etc as sometimes the data can become out of synch.
There are various commands available in the Connections wiki to synchronise data if that's the problem you are faced with.