Category Stop Listing All Posts

I’m new here and am in need of help.

I’ve been developing a site for a few weeks now and have been posting items to my may category. Up until today I was able to see all my posts on that category page now I only see one post. I didn’t make any adjustments it just now only list one post when I click on the category, I have to press the previous button at the bottom to see the previous posts.

Ive gone to settings> reading> and tried to change the “blog pages post at most” but it keeps going back to 1!! Not sure if this is what needs to be adjusted (although I never changed it)

What do I need to do to get it back to listing 10 or so posts on the category page before having to click the previous button?

Don’t know if this helps but I’m using the Attitude theme. https://laborfinders.jobs/maketingsite/?cat=3