I just restarted another new game and I'm having issues.

At the moment I don't own a home in Skyrim. And I can't store items in my spouses home.

http://elderscrolls.wikia.com/wiki/Sylgja

From Skyrim wiki:
The spiders will respawn over time. It's possible that the spiders then kill the miners, because the miners will still enter the mine with the spiders in it. This can result in a bug that can be exploited for infinite gold, as every time the mine is cleared of the respawned spiders the prompt will appear to once again "Return to Filnjar", who will pay the reward again.

From the link you posted

If you enter the mine during the day after the spiders respawn then any of the miners can be killed - especially the guy working in the lower levels who can be attacked by *three* spiders.

I go in after midnight every so often and clean the svckers out.