I registered mashedup.ca this morning, installed wordpress

Hi I registered mashedup.ca this morning, installed wordpress and installed marketpress, membership, and the dashboard. While working on getting dashboard setup, I all of a sudden got 404 error codes and cannot access my wp admin panel. While logged in here, I checked my updates and said no website registered, and there is NO option to add/register my website. (was able to on another though spoo.. something) I uploaded the zipped file from my computer & went through the process ok, though I was prompted to upgrade (logged in as account was established already-did not create new). Should I have my hosting company delete it and start from scratch?