The need for recognition is contemplated within the needs of the human being. Abraham Maslow explained it that way in his well-known theory, giving him a higher ranking within the pyramid of human needs.

Second, you must be honest if you present build a solid rapport between the people involved. The compliments must respond to a higher level in achieving the objectives. Giving compliments as part of a simple formality, end up affecting the credibility between the parties.
Finally I will quote an expression that I have heard in the managerial field which I think is great and applicable in any context of our public relations: "Recognize in public, ricrimina in private".
Greetings and happy weekend to all! As masterfully pointed out by @chbartist, in any kind of relationship it is necessary to make use of compliments. This use must, in the first instance, be timely. An untimely recognition loses its motivating effect.