Welcome to the Q&A Forum

My organization's website currently hosts research databases on a subdomain. We're relatively new to MOZ and when I ran a crawl of my site, it came back with 30K issues.... 98% of which are on this subdomain. I wish I could just remove it and call it a day, however, real and active researchers use it regularly. My question is: Does a subdomain hurt/help a domain? I'm seeing mixed results via Google search and browsing this forum. I'm concerned that I will not be able to fix these 30K issues as I do have access to maintain this database... and just by looking at it you can tell it was built in 2005 and hasn't been updated from an SEO perspective since. Any suggestions?