Issues with site

I have a few issues going on that are way beyond my scope. One is that I can not create new blogs with this MU site

I had someone from the post a job section look at it a few weeks ago look at it and he was going to fix it but has disappeared

He did say he needed to backup the site and do a clean install

I have an account that you all did an install for me on with another mu site and I assume we can move this site to it also to make sure there are no server issues with the server its on now unless you think it can stay where its at

Second issue is there is a column that the content disappeared and I cannot find how to fix it.

Just need to get this done asap and will pay for a new install and what it will take to move it

Thanks for the help