Related, I was once applying for an apartment lease. I had entered an incorrect value on some field on one of the forms. The kind person emailed me the form pointing out the mistake and told me I would have to fix it before they could accept the application and would have to come back in.

Not wanting to drive a few hours, I exported the unsigned pdf as images, quickly made the fix, converted it back pdf, and sent it away with a message saying not to worry, I fixed the problem.

Then communication ceased. I couldn’t get a reply. When I called, they put me on hold and said they were no longer taking applications (they claimed many units were available before).

I like to think the pristine color and noise matching, from my especially mediocre photoshop skill, was too convincing, and made them worry.