As your baby realizes the true function of the footrest, it is possible that they apply downwards pressure (thus making it slide down) or even try to stand up and get out of the chair.
The main function of this product is to allow your footrest to be completely stable and without slipping. The support is made of PLA, a bioplastic made from dextrose (sugar) extracted from materials from renewable sources (corn starch or sugar cane). It has the advantage over other plastics that it can be biodegraded under properly controlled humidity and temperature conditions.
As the screw is made of metal and the bracket is made of plastic, it might be possible to cause the bracket to break by over-tightening the screw, therefore only tighten as necessary so that it is no longer possible for the bracket to move.
Despite being biodegradable, you should avoid factors that contribute to this such as being near heat sources above 50 C and prolonged exposure to high humidity. The support can be washed without submerging and without the need for high temperatures. It must be dried afterwards to ensure greater durability.
The clamps are not a toy and contain small parts that can cause choking.