I am unable to fulfill their request.

Sorry, but I am incapable of that request at present time. My capabilities are {limited to|confined to a range of read more tasks. Perhaps you could try a different approach.

I aim to offer helpful and ethical support.

The term you/that/which used is connected with sexually explicit content, which I am designed to stay away from.

Could you tell me if you have any other needs?

If so, please provide them and I'll do my best to fulfill them within ethical and safe guidelines.