My items do not appear on the trade website

I've been playing POE for 10 years, and I know how to use POE Trade sales very well. For 4 days now, my items have not appeared in the standard POE Trade search, and I can only find them with a specific search, such as my account tag. I've asked friends to search for the items I've put up for sale, but they don't see them. What's the solution to this problem?