Hi @mohib,
A warm welcome to the Bunnings Workshop community and thank you for your question.
There's a good chance there are grub screws on the underside of the towel rail.
The likely solution is to set the towel rail back in position and tighten these grub screws with an allen key.
Check the underside of the towel rail and tell me what you find. If this is not the solution, please let me know so I can assist further.
Jacob
