You’ve been here long enough to know, you made the claim and it’s not up to others to track down info to back you up, you need to provide a source. Even so, I’ve done a web search for nonpayment on “Trump” signs and haven’t found anything like what you’re saying. That doesn’t mean it’s not out there, but I looked and did not find it. What was the magazine?
Easy quick search on Google pops up one story by Reuters. The one about the big signs on the sides of his buildings did not come up. If I run across it later I will tell you.
Until then, maybe try vetting your own crooks.