That's really odd, I've never heard of it being that restrictive. Have you tried simply using a different account?
Another option is going back to absolute basics and seeing what truly sets it off. Just start with "man standing in forest," or whatever, and build out the prompt one bit at the time. "Man standing in forest wearing blue jeans and a white shirt," etc.
Sometimes it can be the order of words or a combination of words that sets it off. I've had prompts where everything worked fine as long as I allowed the subject to wear red. Any other colour would get dogged, and removing "red" got a content warning.
Btw, do you use StableDiffusion prompts in Bing?